290504725

素因数分解:

$5^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{21013}}^1$

素因数の和:21109

約数の個数: 24

約数和(自身を含む): 416917760

約数和(自身を除く): 126413035

約数列:

[1, 5, 7, 25, 35, 79, 175, 395, 553, 1975, 2765, 13825, 21013, 105065, 147091, 525325, 735455, 1660027, 3677275, 8300135, 11620189, 41500675, 58100945, 290504725]

約数ペア:

[(1, 290504725), (5, 58100945), (7, 41500675), (25, 11620189), (35, 8300135), (79, 3677275), (175, 1660027), (395, 735455), (553, 525325), (1975, 147091), (2765, 105065), (13825, 21013)]