20997420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5737}}^1$

素因数の和:5810

約数の個数: 48

約数和(自身を含む): 59767008

約数和(自身を除く): 38769588

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 244, 305, 366, 610, 732, 915, 1220, 1830, 3660, 5737, 11474, 17211, 22948, 28685, 34422, 57370, 68844, 86055, 114740, 172110, 344220, 349957, 699914, 1049871, 1399828, 1749785, 2099742, 3499570, 4199484, 5249355, 6999140, 10498710, 20997420]

約数ペア:

[(1, 20997420), (2, 10498710), (3, 6999140), (4, 5249355), (5, 4199484), (6, 3499570), (10, 2099742), (12, 1749785), (15, 1399828), (20, 1049871), (30, 699914), (60, 349957), (61, 344220), (122, 172110), (183, 114740), (244, 86055), (305, 68844), (366, 57370), (610, 34422), (732, 28685), (915, 22948), (1220, 17211), (1830, 11474), (3660, 5737)]