21616020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:186

約数の個数: 144

約数和(自身を含む): 70171920

約数和(自身を除く): 48555900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 41, 45, 58, 60, 82, 87, 90, 101, 116, 123, 145, 164, 174, 180, 202, 205, 246, 261, 290, 303, 348, 369, 404, 410, 435, 492, 505, 522, 580, 606, 615, 738, 820, 870, 909, 1010, 1044, 1189, 1212, 1230, 1305, 1476, 1515, 1740, 1818, 1845, 2020, 2378, 2460, 2610, 2929, 3030, 3567, 3636, 3690, 4141, 4545, 4756, 5220, 5858, 5945, 6060, 7134, 7380, 8282, 8787, 9090, 10701, 11716, 11890, 12423, 14268, 14645, 16564, 17574, 17835, 18180, 20705, 21402, 23780, 24846, 26361, 29290, 35148, 35670, 37269, 41410, 42804, 43935, 49692, 52722, 53505, 58580, 62115, 71340, 74538, 82820, 87870, 105444, 107010, 120089, 124230, 131805, 149076, 175740, 186345, 214020, 240178, 248460, 263610, 360267, 372690, 480356, 527220, 600445, 720534, 745380, 1080801, 1200890, 1441068, 1801335, 2161602, 2401780, 3602670, 4323204, 5404005, 7205340, 10808010, 21616020]

約数ペア:

[(1, 21616020), (2, 10808010), (3, 7205340), (4, 5404005), (5, 4323204), (6, 3602670), (9, 2401780), (10, 2161602), (12, 1801335), (15, 1441068), (18, 1200890), (20, 1080801), (29, 745380), (30, 720534), (36, 600445), (41, 527220), (45, 480356), (58, 372690), (60, 360267), (82, 263610), (87, 248460), (90, 240178), (101, 214020), (116, 186345), (123, 175740), (145, 149076), (164, 131805), (174, 124230), (180, 120089), (202, 107010), (205, 105444), (246, 87870), (261, 82820), (290, 74538), (303, 71340), (348, 62115), (369, 58580), (404, 53505), (410, 52722), (435, 49692), (492, 43935), (505, 42804), (522, 41410), (580, 37269), (606, 35670), (615, 35148), (738, 29290), (820, 26361), (870, 24846), (909, 23780), (1010, 21402), (1044, 20705), (1189, 18180), (1212, 17835), (1230, 17574), (1305, 16564), (1476, 14645), (1515, 14268), (1740, 12423), (1818, 11890), (1845, 11716), (2020, 10701), (2378, 9090), (2460, 8787), (2610, 8282), (2929, 7380), (3030, 7134), (3567, 6060), (3636, 5945), (3690, 5858), (4141, 5220), (4545, 4756)]