21498744

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:157

約数の個数: 128

約数和(自身を含む): 62208000

約数和(自身を除く): 40709256

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 23, 24, 29, 34, 46, 51, 58, 68, 69, 79, 87, 92, 102, 116, 136, 138, 158, 174, 184, 204, 232, 237, 276, 316, 348, 391, 408, 474, 493, 552, 632, 667, 696, 782, 948, 986, 1173, 1334, 1343, 1479, 1564, 1817, 1896, 1972, 2001, 2291, 2346, 2668, 2686, 2958, 3128, 3634, 3944, 4002, 4029, 4582, 4692, 5336, 5372, 5451, 5916, 6873, 7268, 8004, 8058, 9164, 9384, 10744, 10902, 11339, 11832, 13746, 14536, 16008, 16116, 18328, 21804, 22678, 27492, 30889, 32232, 34017, 38947, 43608, 45356, 52693, 54984, 61778, 68034, 77894, 90712, 92667, 105386, 116841, 123556, 136068, 155788, 158079, 185334, 210772, 233682, 247112, 272136, 311576, 316158, 370668, 421544, 467364, 632316, 741336, 895781, 934728, 1264632, 1791562, 2687343, 3583124, 5374686, 7166248, 10749372, 21498744]

約数ペア:

[(1, 21498744), (2, 10749372), (3, 7166248), (4, 5374686), (6, 3583124), (8, 2687343), (12, 1791562), (17, 1264632), (23, 934728), (24, 895781), (29, 741336), (34, 632316), (46, 467364), (51, 421544), (58, 370668), (68, 316158), (69, 311576), (79, 272136), (87, 247112), (92, 233682), (102, 210772), (116, 185334), (136, 158079), (138, 155788), (158, 136068), (174, 123556), (184, 116841), (204, 105386), (232, 92667), (237, 90712), (276, 77894), (316, 68034), (348, 61778), (391, 54984), (408, 52693), (474, 45356), (493, 43608), (552, 38947), (632, 34017), (667, 32232), (696, 30889), (782, 27492), (948, 22678), (986, 21804), (1173, 18328), (1334, 16116), (1343, 16008), (1479, 14536), (1564, 13746), (1817, 11832), (1896, 11339), (1972, 10902), (2001, 10744), (2291, 9384), (2346, 9164), (2668, 8058), (2686, 8004), (2958, 7268), (3128, 6873), (3634, 5916), (3944, 5451), (4002, 5372), (4029, 5336), (4582, 4692)]