81391440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1373}}^1$

素因数の和:1421

約数の個数: 160

約数和(自身を含む): 286231680

約数和(自身を除く): 204840240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 19, 20, 24, 26, 30, 38, 39, 40, 48, 52, 57, 60, 65, 76, 78, 80, 95, 104, 114, 120, 130, 152, 156, 190, 195, 208, 228, 240, 247, 260, 285, 304, 312, 380, 390, 456, 494, 520, 570, 624, 741, 760, 780, 912, 988, 1040, 1140, 1235, 1373, 1482, 1520, 1560, 1976, 2280, 2470, 2746, 2964, 3120, 3705, 3952, 4119, 4560, 4940, 5492, 5928, 6865, 7410, 8238, 9880, 10984, 11856, 13730, 14820, 16476, 17849, 19760, 20595, 21968, 26087, 27460, 29640, 32952, 35698, 41190, 52174, 53547, 54920, 59280, 65904, 71396, 78261, 82380, 89245, 104348, 107094, 109840, 130435, 142792, 156522, 164760, 178490, 208696, 214188, 260870, 267735, 285584, 313044, 329520, 339131, 356980, 391305, 417392, 428376, 521740, 535470, 626088, 678262, 713960, 782610, 856752, 1017393, 1043480, 1070940, 1252176, 1356524, 1427920, 1565220, 1695655, 2034786, 2086960, 2141880, 2713048, 3130440, 3391310, 4069572, 4283760, 5086965, 5426096, 6260880, 6782620, 8139144, 10173930, 13565240, 16278288, 20347860, 27130480, 40695720, 81391440]

約数ペア:

[(1, 81391440), (2, 40695720), (3, 27130480), (4, 20347860), (5, 16278288), (6, 13565240), (8, 10173930), (10, 8139144), (12, 6782620), (13, 6260880), (15, 5426096), (16, 5086965), (19, 4283760), (20, 4069572), (24, 3391310), (26, 3130440), (30, 2713048), (38, 2141880), (39, 2086960), (40, 2034786), (48, 1695655), (52, 1565220), (57, 1427920), (60, 1356524), (65, 1252176), (76, 1070940), (78, 1043480), (80, 1017393), (95, 856752), (104, 782610), (114, 713960), (120, 678262), (130, 626088), (152, 535470), (156, 521740), (190, 428376), (195, 417392), (208, 391305), (228, 356980), (240, 339131), (247, 329520), (260, 313044), (285, 285584), (304, 267735), (312, 260870), (380, 214188), (390, 208696), (456, 178490), (494, 164760), (520, 156522), (570, 142792), (624, 130435), (741, 109840), (760, 107094), (780, 104348), (912, 89245), (988, 82380), (1040, 78261), (1140, 71396), (1235, 65904), (1373, 59280), (1482, 54920), (1520, 53547), (1560, 52174), (1976, 41190), (2280, 35698), (2470, 32952), (2746, 29640), (2964, 27460), (3120, 26087), (3705, 21968), (3952, 20595), (4119, 19760), (4560, 17849), (4940, 16476), (5492, 14820), (5928, 13730), (6865, 11856), (7410, 10984), (8238, 9880)]