15721915120

素因数分解:

$2^4\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{194771}}^1$

素因数の和:195793

約数の個数: 40

約数和(自身を含む): 36589867920

約数和(自身を除く): 20867952800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1009, 2018, 4036, 5045, 8072, 10090, 16144, 20180, 40360, 80720, 194771, 389542, 779084, 973855, 1558168, 1947710, 3116336, 3895420, 7790840, 15581680, 196523939, 393047878, 786095756, 982619695, 1572191512, 1965239390, 3144383024, 3930478780, 7860957560, 15721915120]

約数ペア:

[(1, 15721915120), (2, 7860957560), (4, 3930478780), (5, 3144383024), (8, 1965239390), (10, 1572191512), (16, 982619695), (20, 786095756), (40, 393047878), (80, 196523939), (1009, 15581680), (2018, 7790840), (4036, 3895420), (5045, 3116336), (8072, 1947710), (10090, 1558168), (16144, 973855), (20180, 779084), (40360, 389542), (80720, 194771)]