19945940

素因数分解:

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

素因数の和:20376

約数の個数: 36

約数和(自身を含む): 48727476

約数和(自身を除く): 28781536

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20353, 40706, 81412, 101765, 142471, 203530, 284942, 407060, 569884, 712355, 997297, 1424710, 1994594, 2849420, 3989188, 4986485, 9972970, 19945940]

約数ペア:

[(1, 19945940), (2, 9972970), (4, 4986485), (5, 3989188), (7, 2849420), (10, 1994594), (14, 1424710), (20, 997297), (28, 712355), (35, 569884), (49, 407060), (70, 284942), (98, 203530), (140, 142471), (196, 101765), (245, 81412), (490, 40706), (980, 20353)]