21647080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{313}}^1$

素因数の和:363

約数の個数: 128

約数和(自身を含む): 63302400

約数和(自身を除く): 41655320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 19, 20, 26, 28, 35, 38, 40, 52, 56, 65, 70, 76, 91, 95, 104, 130, 133, 140, 152, 182, 190, 247, 260, 266, 280, 313, 364, 380, 455, 494, 520, 532, 626, 665, 728, 760, 910, 988, 1064, 1235, 1252, 1330, 1565, 1729, 1820, 1976, 2191, 2470, 2504, 2660, 3130, 3458, 3640, 4069, 4382, 4940, 5320, 5947, 6260, 6916, 8138, 8645, 8764, 9880, 10955, 11894, 12520, 13832, 16276, 17290, 17528, 20345, 21910, 23788, 28483, 29735, 32552, 34580, 40690, 41629, 43820, 47576, 56966, 59470, 69160, 77311, 81380, 83258, 87640, 113932, 118940, 142415, 154622, 162760, 166516, 208145, 227864, 237880, 284830, 309244, 333032, 386555, 416290, 541177, 569660, 618488, 773110, 832580, 1082354, 1139320, 1546220, 1665160, 2164708, 2705885, 3092440, 4329416, 5411770, 10823540, 21647080]

約数ペア:

[(1, 21647080), (2, 10823540), (4, 5411770), (5, 4329416), (7, 3092440), (8, 2705885), (10, 2164708), (13, 1665160), (14, 1546220), (19, 1139320), (20, 1082354), (26, 832580), (28, 773110), (35, 618488), (38, 569660), (40, 541177), (52, 416290), (56, 386555), (65, 333032), (70, 309244), (76, 284830), (91, 237880), (95, 227864), (104, 208145), (130, 166516), (133, 162760), (140, 154622), (152, 142415), (182, 118940), (190, 113932), (247, 87640), (260, 83258), (266, 81380), (280, 77311), (313, 69160), (364, 59470), (380, 56966), (455, 47576), (494, 43820), (520, 41629), (532, 40690), (626, 34580), (665, 32552), (728, 29735), (760, 28483), (910, 23788), (988, 21910), (1064, 20345), (1235, 17528), (1252, 17290), (1330, 16276), (1565, 13832), (1729, 12520), (1820, 11894), (1976, 10955), (2191, 9880), (2470, 8764), (2504, 8645), (2660, 8138), (3130, 6916), (3458, 6260), (3640, 5947), (4069, 5320), (4382, 4940)]