21864856

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 47628000

約数和(自身を除く): 25763144

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 83, 104, 136, 149, 166, 221, 298, 332, 442, 596, 664, 884, 1079, 1192, 1411, 1768, 1937, 2158, 2533, 2822, 3874, 4316, 5066, 5644, 7748, 8632, 10132, 11288, 12367, 15496, 18343, 20264, 24734, 32929, 36686, 49468, 65858, 73372, 98936, 131716, 146744, 160771, 210239, 263432, 321542, 420478, 643084, 840956, 1286168, 1681912, 2733107, 5466214, 10932428, 21864856]

約数ペア:

[(1, 21864856), (2, 10932428), (4, 5466214), (8, 2733107), (13, 1681912), (17, 1286168), (26, 840956), (34, 643084), (52, 420478), (68, 321542), (83, 263432), (104, 210239), (136, 160771), (149, 146744), (166, 131716), (221, 98936), (298, 73372), (332, 65858), (442, 49468), (596, 36686), (664, 32929), (884, 24734), (1079, 20264), (1192, 18343), (1411, 15496), (1768, 12367), (1937, 11288), (2158, 10132), (2533, 8632), (2822, 7748), (3874, 5644), (4316, 5066)]