20872920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{181}}^1$

素因数の和:257

約数の個数: 96

約数和(自身を含む): 65061360

約数和(自身を除く): 44188440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 181, 186, 248, 310, 362, 372, 465, 543, 620, 724, 744, 905, 930, 961, 1086, 1240, 1448, 1810, 1860, 1922, 2172, 2715, 2883, 3620, 3720, 3844, 4344, 4805, 5430, 5611, 5766, 7240, 7688, 9610, 10860, 11222, 11532, 14415, 16833, 19220, 21720, 22444, 23064, 28055, 28830, 33666, 38440, 44888, 56110, 57660, 67332, 84165, 112220, 115320, 134664, 168330, 173941, 224440, 336660, 347882, 521823, 673320, 695764, 869705, 1043646, 1391528, 1739410, 2087292, 2609115, 3478820, 4174584, 5218230, 6957640, 10436460, 20872920]

約数ペア:

[(1, 20872920), (2, 10436460), (3, 6957640), (4, 5218230), (5, 4174584), (6, 3478820), (8, 2609115), (10, 2087292), (12, 1739410), (15, 1391528), (20, 1043646), (24, 869705), (30, 695764), (31, 673320), (40, 521823), (60, 347882), (62, 336660), (93, 224440), (120, 173941), (124, 168330), (155, 134664), (181, 115320), (186, 112220), (248, 84165), (310, 67332), (362, 57660), (372, 56110), (465, 44888), (543, 38440), (620, 33666), (724, 28830), (744, 28055), (905, 23064), (930, 22444), (961, 21720), (1086, 19220), (1240, 16833), (1448, 14415), (1810, 11532), (1860, 11222), (1922, 10860), (2172, 9610), (2715, 7688), (2883, 7240), (3620, 5766), (3720, 5611), (3844, 5430), (4344, 4805)]