18172840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1583}}^1$

素因数の和:1642

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 29727320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 820, 1148, 1435, 1583, 1640, 2296, 2870, 3166, 5740, 6332, 7915, 11081, 11480, 12664, 15830, 22162, 31660, 44324, 55405, 63320, 64903, 88648, 110810, 129806, 221620, 259612, 324515, 443240, 454321, 519224, 649030, 908642, 1298060, 1817284, 2271605, 2596120, 3634568, 4543210, 9086420, 18172840]

約数ペア:

[(1, 18172840), (2, 9086420), (4, 4543210), (5, 3634568), (7, 2596120), (8, 2271605), (10, 1817284), (14, 1298060), (20, 908642), (28, 649030), (35, 519224), (40, 454321), (41, 443240), (56, 324515), (70, 259612), (82, 221620), (140, 129806), (164, 110810), (205, 88648), (280, 64903), (287, 63320), (328, 55405), (410, 44324), (574, 31660), (820, 22162), (1148, 15830), (1435, 12664), (1583, 11480), (1640, 11081), (2296, 7915), (2870, 6332), (3166, 5740)]