21557440

素因数分解:

$2^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:170

約数の個数: 112

約数和(自身を含む): 55961280

約数和(自身を除く): 34403840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 29, 32, 40, 46, 58, 64, 80, 92, 101, 115, 116, 145, 160, 184, 202, 230, 232, 290, 320, 368, 404, 460, 464, 505, 580, 667, 736, 808, 920, 928, 1010, 1160, 1334, 1472, 1616, 1840, 1856, 2020, 2320, 2323, 2668, 2929, 3232, 3335, 3680, 4040, 4640, 4646, 5336, 5858, 6464, 6670, 7360, 8080, 9280, 9292, 10672, 11615, 11716, 13340, 14645, 16160, 18584, 21344, 23230, 23432, 26680, 29290, 32320, 37168, 42688, 46460, 46864, 53360, 58580, 67367, 74336, 92920, 93728, 106720, 117160, 134734, 148672, 185840, 187456, 213440, 234320, 269468, 336835, 371680, 468640, 538936, 673670, 743360, 937280, 1077872, 1347340, 2155744, 2694680, 4311488, 5389360, 10778720, 21557440]

約数ペア:

[(1, 21557440), (2, 10778720), (4, 5389360), (5, 4311488), (8, 2694680), (10, 2155744), (16, 1347340), (20, 1077872), (23, 937280), (29, 743360), (32, 673670), (40, 538936), (46, 468640), (58, 371680), (64, 336835), (80, 269468), (92, 234320), (101, 213440), (115, 187456), (116, 185840), (145, 148672), (160, 134734), (184, 117160), (202, 106720), (230, 93728), (232, 92920), (290, 74336), (320, 67367), (368, 58580), (404, 53360), (460, 46864), (464, 46460), (505, 42688), (580, 37168), (667, 32320), (736, 29290), (808, 26680), (920, 23432), (928, 23230), (1010, 21344), (1160, 18584), (1334, 16160), (1472, 14645), (1616, 13340), (1840, 11716), (1856, 11615), (2020, 10672), (2320, 9292), (2323, 9280), (2668, 8080), (2929, 7360), (3232, 6670), (3335, 6464), (3680, 5858), (4040, 5336), (4640, 4646)]