39891880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{20353}}^1$

素因数の和:20378

約数の個数: 48

約数和(自身を含む): 104416020

約数和(自身を除く): 64524140

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 20353, 40706, 81412, 101765, 142471, 162824, 203530, 284942, 407060, 569884, 712355, 814120, 997297, 1139768, 1424710, 1994594, 2849420, 3989188, 4986485, 5698840, 7978376, 9972970, 19945940, 39891880]

約数ペア:

[(1, 39891880), (2, 19945940), (4, 9972970), (5, 7978376), (7, 5698840), (8, 4986485), (10, 3989188), (14, 2849420), (20, 1994594), (28, 1424710), (35, 1139768), (40, 997297), (49, 814120), (56, 712355), (70, 569884), (98, 407060), (140, 284942), (196, 203530), (245, 162824), (280, 142471), (392, 101765), (490, 81412), (980, 40706), (1960, 20353)]