21001664

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:325

約数の個数: 56

約数和(自身を含む): 44805600

約数和(自身を除く): 23803936

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 97, 136, 194, 199, 272, 388, 398, 544, 776, 796, 1088, 1552, 1592, 1649, 3104, 3184, 3298, 3383, 6208, 6368, 6596, 6766, 12736, 13192, 13532, 19303, 26384, 27064, 38606, 52768, 54128, 77212, 105536, 108256, 154424, 216512, 308848, 328151, 617696, 656302, 1235392, 1312604, 2625208, 5250416, 10500832, 21001664]

約数ペア:

[(1, 21001664), (2, 10500832), (4, 5250416), (8, 2625208), (16, 1312604), (17, 1235392), (32, 656302), (34, 617696), (64, 328151), (68, 308848), (97, 216512), (136, 154424), (194, 108256), (199, 105536), (272, 77212), (388, 54128), (398, 52768), (544, 38606), (776, 27064), (796, 26384), (1088, 19303), (1552, 13532), (1592, 13192), (1649, 12736), (3104, 6766), (3184, 6596), (3298, 6368), (3383, 6208)]