20721990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{6337}}^1$

素因数の和:6456

約数の個数: 32

約数和(自身を含む): 50196960

約数和(自身を除く): 29474970

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 109, 218, 327, 545, 654, 1090, 1635, 3270, 6337, 12674, 19011, 31685, 38022, 63370, 95055, 190110, 690733, 1381466, 2072199, 3453665, 4144398, 6907330, 10360995, 20721990]

約数ペア:

[(1, 20721990), (2, 10360995), (3, 6907330), (5, 4144398), (6, 3453665), (10, 2072199), (15, 1381466), (30, 690733), (109, 190110), (218, 95055), (327, 63370), (545, 38022), (654, 31685), (1090, 19011), (1635, 12674), (3270, 6337)]