87981880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1579}}^1$

素因数の和:1796

約数の個数: 64

約数和(自身を含む): 227520000

約数和(自身を除く): 139538120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 199, 280, 398, 796, 995, 1393, 1579, 1592, 1990, 2786, 3158, 3980, 5572, 6316, 6965, 7895, 7960, 11053, 11144, 12632, 13930, 15790, 22106, 27860, 31580, 44212, 55265, 55720, 63160, 88424, 110530, 221060, 314221, 442120, 628442, 1256884, 1571105, 2199547, 2513768, 3142210, 4399094, 6284420, 8798188, 10997735, 12568840, 17596376, 21995470, 43990940, 87981880]

約数ペア:

[(1, 87981880), (2, 43990940), (4, 21995470), (5, 17596376), (7, 12568840), (8, 10997735), (10, 8798188), (14, 6284420), (20, 4399094), (28, 3142210), (35, 2513768), (40, 2199547), (56, 1571105), (70, 1256884), (140, 628442), (199, 442120), (280, 314221), (398, 221060), (796, 110530), (995, 88424), (1393, 63160), (1579, 55720), (1592, 55265), (1990, 44212), (2786, 31580), (3158, 27860), (3980, 22106), (5572, 15790), (6316, 13930), (6965, 12632), (7895, 11144), (7960, 11053)]