290978840

素因数分解:

$2^3\times 5^1\times {\mathrm{613}}^1\times {\mathrm{11867}}^1$

素因数の和:12491

約数の個数: 32

約数和(自身を含む): 655825680

約数和(自身を除く): 364846840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 613, 1226, 2452, 3065, 4904, 6130, 11867, 12260, 23734, 24520, 47468, 59335, 94936, 118670, 237340, 474680, 7274471, 14548942, 29097884, 36372355, 58195768, 72744710, 145489420, 290978840]

約数ペア:

[(1, 290978840), (2, 145489420), (4, 72744710), (5, 58195768), (8, 36372355), (10, 29097884), (20, 14548942), (40, 7274471), (613, 474680), (1226, 237340), (2452, 118670), (3065, 94936), (4904, 59335), (6130, 47468), (11867, 24520), (12260, 23734)]