21697290

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{491}}^2$

素因数の和:995

約数の個数: 36

約数和(自身を含む): 56528082

約数和(自身を除く): 34830792

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 491, 982, 1473, 2455, 2946, 4419, 4910, 7365, 8838, 14730, 22095, 44190, 241081, 482162, 723243, 1205405, 1446486, 2169729, 2410810, 3616215, 4339458, 7232430, 10848645, 21697290]

約数ペア:

[(1, 21697290), (2, 10848645), (3, 7232430), (5, 4339458), (6, 3616215), (9, 2410810), (10, 2169729), (15, 1446486), (18, 1205405), (30, 723243), (45, 482162), (90, 241081), (491, 44190), (982, 22095), (1473, 14730), (2455, 8838), (2946, 7365), (4419, 4910)]