20151880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71971}}^1$

素因数の和:71989

約数の個数: 32

約数和(自身を含む): 51819840

約数和(自身を除く): 31667960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71971, 143942, 287884, 359855, 503797, 575768, 719710, 1007594, 1439420, 2015188, 2518985, 2878840, 4030376, 5037970, 10075940, 20151880]

約数ペア:

[(1, 20151880), (2, 10075940), (4, 5037970), (5, 4030376), (7, 2878840), (8, 2518985), (10, 2015188), (14, 1439420), (20, 1007594), (28, 719710), (35, 575768), (40, 503797), (56, 359855), (70, 287884), (140, 143942), (280, 71971)]