19881990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{73637}}^1$

素因数の和:73653

約数の個数: 32

約数和(自身を含む): 53019360

約数和(自身を除く): 33137370

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 270, 73637, 147274, 220911, 368185, 441822, 662733, 736370, 1104555, 1325466, 1988199, 2209110, 3313665, 3976398, 6627330, 9940995, 19881990]

約数ペア:

[(1, 19881990), (2, 9940995), (3, 6627330), (5, 3976398), (6, 3313665), (9, 2209110), (10, 1988199), (15, 1325466), (18, 1104555), (27, 736370), (30, 662733), (45, 441822), (54, 368185), (90, 220911), (135, 147274), (270, 73637)]