21485204

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 20850796

約数列:

[1, 2, 4, 13, 26, 47, 52, 59, 94, 118, 149, 188, 236, 298, 596, 611, 767, 1222, 1534, 1937, 2444, 2773, 3068, 3874, 5546, 7003, 7748, 8791, 11092, 14006, 17582, 28012, 35164, 36049, 72098, 91039, 114283, 144196, 182078, 228566, 364156, 413177, 457132, 826354, 1652708, 5371301, 10742602, 21485204]

約数ペア:

[(1, 21485204), (2, 10742602), (4, 5371301), (13, 1652708), (26, 826354), (47, 457132), (52, 413177), (59, 364156), (94, 228566), (118, 182078), (149, 144196), (188, 114283), (236, 91039), (298, 72098), (596, 36049), (611, 35164), (767, 28012), (1222, 17582), (1534, 14006), (1937, 11092), (2444, 8791), (2773, 7748), (3068, 7003), (3874, 5546)]