1821208240

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{529421}}^1$

素因数の和:529477

約数の個数: 40

約数和(自身を含む): 4332789648

約数和(自身を除く): 2511581408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 529421, 1058842, 2117684, 2647105, 4235368, 5294210, 8470736, 10588420, 21176840, 22765103, 42353680, 45530206, 91060412, 113825515, 182120824, 227651030, 364241648, 455302060, 910604120, 1821208240]

約数ペア:

[(1, 1821208240), (2, 910604120), (4, 455302060), (5, 364241648), (8, 227651030), (10, 182120824), (16, 113825515), (20, 91060412), (40, 45530206), (43, 42353680), (80, 22765103), (86, 21176840), (172, 10588420), (215, 8470736), (344, 5294210), (430, 4235368), (688, 2647105), (860, 2117684), (1720, 1058842), (3440, 529421)]