20778563780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{367}}^1$

素因数の和:638

約数の個数: 192

約数和(自身を含む): 50599234560

約数和(自身を除く): 29820670780

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 73, 76, 95, 130, 146, 157, 190, 247, 260, 292, 314, 365, 367, 380, 494, 628, 730, 734, 785, 949, 988, 1235, 1387, 1460, 1468, 1570, 1835, 1898, 2041, 2470, 2774, 2983, 3140, 3670, 3796, 4082, 4745, 4771, 4940, 5548, 5966, 6935, 6973, 7340, 8164, 9490, 9542, 10205, 11461, 11932, 13870, 13946, 14915, 18031, 18980, 19084, 20410, 22922, 23855, 26791, 27740, 27892, 29830, 34865, 36062, 38779, 40820, 45844, 47710, 53582, 57305, 57619, 59660, 69730, 72124, 77558, 90155, 90649, 95420, 107164, 114610, 115238, 133955, 139460, 148993, 155116, 180310, 181298, 193895, 217759, 229220, 230476, 267910, 288095, 297986, 348283, 360620, 362596, 387790, 435518, 453245, 509029, 535820, 576190, 595972, 696566, 744965, 749047, 775580, 871036, 906490, 1018058, 1088795, 1094761, 1152380, 1393132, 1489930, 1498094, 1741415, 1812980, 2036116, 2177590, 2189522, 2545145, 2830867, 2979860, 2996188, 3482830, 3745235, 4206187, 4355180, 4379044, 5090290, 5473805, 5661734, 6617377, 6965660, 7490470, 8412374, 10180580, 10947610, 11323468, 13234754, 14154335, 14231893, 14980940, 16824748, 21030935, 21895220, 26469508, 28308670, 28463786, 33086885, 42061870, 54680431, 56617340, 56927572, 66173770, 71159465, 79917553, 84123740, 109360862, 132347540, 142318930, 159835106, 218721724, 273402155, 284637860, 319670212, 399587765, 546804310, 799175530, 1038928189, 1093608620, 1598351060, 2077856378, 4155712756, 5194640945, 10389281890, 20778563780]

約数ペア:

[(1, 20778563780), (2, 10389281890), (4, 5194640945), (5, 4155712756), (10, 2077856378), (13, 1598351060), (19, 1093608620), (20, 1038928189), (26, 799175530), (38, 546804310), (52, 399587765), (65, 319670212), (73, 284637860), (76, 273402155), (95, 218721724), (130, 159835106), (146, 142318930), (157, 132347540), (190, 109360862), (247, 84123740), (260, 79917553), (292, 71159465), (314, 66173770), (365, 56927572), (367, 56617340), (380, 54680431), (494, 42061870), (628, 33086885), (730, 28463786), (734, 28308670), (785, 26469508), (949, 21895220), (988, 21030935), (1235, 16824748), (1387, 14980940), (1460, 14231893), (1468, 14154335), (1570, 13234754), (1835, 11323468), (1898, 10947610), (2041, 10180580), (2470, 8412374), (2774, 7490470), (2983, 6965660), (3140, 6617377), (3670, 5661734), (3796, 5473805), (4082, 5090290), (4745, 4379044), (4771, 4355180), (4940, 4206187), (5548, 3745235), (5966, 3482830), (6935, 2996188), (6973, 2979860), (7340, 2830867), (8164, 2545145), (9490, 2189522), (9542, 2177590), (10205, 2036116), (11461, 1812980), (11932, 1741415), (13870, 1498094), (13946, 1489930), (14915, 1393132), (18031, 1152380), (18980, 1094761), (19084, 1088795), (20410, 1018058), (22922, 906490), (23855, 871036), (26791, 775580), (27740, 749047), (27892, 744965), (29830, 696566), (34865, 595972), (36062, 576190), (38779, 535820), (40820, 509029), (45844, 453245), (47710, 435518), (53582, 387790), (57305, 362596), (57619, 360620), (59660, 348283), (69730, 297986), (72124, 288095), (77558, 267910), (90155, 230476), (90649, 229220), (95420, 217759), (107164, 193895), (114610, 181298), (115238, 180310), (133955, 155116), (139460, 148993)]