21292960

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{353}}^1$

素因数の和:410

約数の個数: 96

約数和(自身を含む): 56201040

約数和(自身を除く): 34908080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 29, 32, 40, 52, 58, 65, 80, 104, 116, 130, 145, 160, 208, 232, 260, 290, 353, 377, 416, 464, 520, 580, 706, 754, 928, 1040, 1160, 1412, 1508, 1765, 1885, 2080, 2320, 2824, 3016, 3530, 3770, 4589, 4640, 5648, 6032, 7060, 7540, 9178, 10237, 11296, 12064, 14120, 15080, 18356, 20474, 22945, 28240, 30160, 36712, 40948, 45890, 51185, 56480, 60320, 73424, 81896, 91780, 102370, 133081, 146848, 163792, 183560, 204740, 266162, 327584, 367120, 409480, 532324, 665405, 734240, 818960, 1064648, 1330810, 1637920, 2129296, 2661620, 4258592, 5323240, 10646480, 21292960]

約数ペア:

[(1, 21292960), (2, 10646480), (4, 5323240), (5, 4258592), (8, 2661620), (10, 2129296), (13, 1637920), (16, 1330810), (20, 1064648), (26, 818960), (29, 734240), (32, 665405), (40, 532324), (52, 409480), (58, 367120), (65, 327584), (80, 266162), (104, 204740), (116, 183560), (130, 163792), (145, 146848), (160, 133081), (208, 102370), (232, 91780), (260, 81896), (290, 73424), (353, 60320), (377, 56480), (416, 51185), (464, 45890), (520, 40948), (580, 36712), (706, 30160), (754, 28240), (928, 22945), (1040, 20474), (1160, 18356), (1412, 15080), (1508, 14120), (1765, 12064), (1885, 11296), (2080, 10237), (2320, 9178), (2824, 7540), (3016, 7060), (3530, 6032), (3770, 5648), (4589, 4640)]