18712120

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{9547}}^1$

素因数の和:9572

約数の個数: 48

約数和(自身を含む): 48981240

約数和(自身を除く): 30269120

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, 9547, 19094, 38188, 47735, 66829, 76376, 95470, 133658, 190940, 267316, 334145, 381880, 467803, 534632, 668290, 935606, 1336580, 1871212, 2339015, 2673160, 3742424, 4678030, 9356060, 18712120]

約数ペア:

[(1, 18712120), (2, 9356060), (4, 4678030), (5, 3742424), (7, 2673160), (8, 2339015), (10, 1871212), (14, 1336580), (20, 935606), (28, 668290), (35, 534632), (40, 467803), (49, 381880), (56, 334145), (70, 267316), (98, 190940), (140, 133658), (196, 95470), (245, 76376), (280, 66829), (392, 47735), (490, 38188), (980, 19094), (1960, 9547)]