81520020

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{50321}}^1$

素因数の和:50342

約数の個数: 60

約数和(自身を含む): 255736404

約数和(自身を除く): 174216384

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 50321, 100642, 150963, 201284, 251605, 301926, 452889, 503210, 603852, 754815, 905778, 1006420, 1358667, 1509630, 1811556, 2264445, 2717334, 3019260, 4076001, 4528890, 5434668, 6793335, 8152002, 9057780, 13586670, 16304004, 20380005, 27173340, 40760010, 81520020]

約数ペア:

[(1, 81520020), (2, 40760010), (3, 27173340), (4, 20380005), (5, 16304004), (6, 13586670), (9, 9057780), (10, 8152002), (12, 6793335), (15, 5434668), (18, 4528890), (20, 4076001), (27, 3019260), (30, 2717334), (36, 2264445), (45, 1811556), (54, 1509630), (60, 1358667), (81, 1006420), (90, 905778), (108, 754815), (135, 603852), (162, 503210), (180, 452889), (270, 301926), (324, 251605), (405, 201284), (540, 150963), (810, 100642), (1620, 50321)]