21603808

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1$

素因数の和:379

約数の個数: 48

約数和(自身を含む): 44906400

約数和(自身を除く): 23302592

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 92, 149, 184, 197, 298, 368, 394, 596, 736, 788, 1192, 1576, 2384, 3152, 3427, 4531, 4768, 6304, 6854, 9062, 13708, 18124, 27416, 29353, 36248, 54832, 58706, 72496, 109664, 117412, 144992, 234824, 469648, 675119, 939296, 1350238, 2700476, 5400952, 10801904, 21603808]

約数ペア:

[(1, 21603808), (2, 10801904), (4, 5400952), (8, 2700476), (16, 1350238), (23, 939296), (32, 675119), (46, 469648), (92, 234824), (149, 144992), (184, 117412), (197, 109664), (298, 72496), (368, 58706), (394, 54832), (596, 36248), (736, 29353), (788, 27416), (1192, 18124), (1576, 13708), (2384, 9062), (3152, 6854), (3427, 6304), (4531, 4768)]