21457506

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{223}}^1$

素因数の和:343

約数の個数: 64

約数和(自身を含む): 51609600

約数和(自身を除く): 30152094

約数列:

[1, 2, 3, 6, 7, 14, 21, 29, 42, 58, 79, 87, 158, 174, 203, 223, 237, 406, 446, 474, 553, 609, 669, 1106, 1218, 1338, 1561, 1659, 2291, 3122, 3318, 4582, 4683, 6467, 6873, 9366, 12934, 13746, 16037, 17617, 19401, 32074, 35234, 38802, 45269, 48111, 52851, 90538, 96222, 105702, 123319, 135807, 246638, 271614, 369957, 510893, 739914, 1021786, 1532679, 3065358, 3576251, 7152502, 10728753, 21457506]

約数ペア:

[(1, 21457506), (2, 10728753), (3, 7152502), (6, 3576251), (7, 3065358), (14, 1532679), (21, 1021786), (29, 739914), (42, 510893), (58, 369957), (79, 271614), (87, 246638), (158, 135807), (174, 123319), (203, 105702), (223, 96222), (237, 90538), (406, 52851), (446, 48111), (474, 45269), (553, 38802), (609, 35234), (669, 32074), (1106, 19401), (1218, 17617), (1338, 16037), (1561, 13746), (1659, 12934), (2291, 9366), (3122, 6873), (3318, 6467), (4582, 4683)]