28921220

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{191}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 62512128

約数和(自身を除く): 33590908

約数列:

[1, 2, 4, 5, 10, 20, 67, 113, 134, 191, 226, 268, 335, 382, 452, 565, 670, 764, 955, 1130, 1340, 1910, 2260, 3820, 7571, 12797, 15142, 21583, 25594, 30284, 37855, 43166, 51188, 63985, 75710, 86332, 107915, 127970, 151420, 215830, 255940, 431660, 1446061, 2892122, 5784244, 7230305, 14460610, 28921220]

約数ペア:

[(1, 28921220), (2, 14460610), (4, 7230305), (5, 5784244), (10, 2892122), (20, 1446061), (67, 431660), (113, 255940), (134, 215830), (191, 151420), (226, 127970), (268, 107915), (335, 86332), (382, 75710), (452, 63985), (565, 51188), (670, 43166), (764, 37855), (955, 30284), (1130, 25594), (1340, 21583), (1910, 15142), (2260, 12797), (3820, 7571)]