20716960

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:254

約数の個数: 96

約数和(自身を含む): 54432000

約数和(自身を除く): 33715040

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 79, 80, 88, 110, 149, 158, 160, 176, 220, 298, 316, 352, 395, 440, 596, 632, 745, 790, 869, 880, 1192, 1264, 1490, 1580, 1639, 1738, 1760, 2384, 2528, 2980, 3160, 3278, 3476, 4345, 4768, 5960, 6320, 6556, 6952, 8195, 8690, 11771, 11920, 12640, 13112, 13904, 16390, 17380, 23542, 23840, 26224, 27808, 32780, 34760, 47084, 52448, 58855, 65560, 69520, 94168, 117710, 129481, 131120, 139040, 188336, 235420, 258962, 262240, 376672, 470840, 517924, 647405, 941680, 1035848, 1294810, 1883360, 2071696, 2589620, 4143392, 5179240, 10358480, 20716960]

約数ペア:

[(1, 20716960), (2, 10358480), (4, 5179240), (5, 4143392), (8, 2589620), (10, 2071696), (11, 1883360), (16, 1294810), (20, 1035848), (22, 941680), (32, 647405), (40, 517924), (44, 470840), (55, 376672), (79, 262240), (80, 258962), (88, 235420), (110, 188336), (149, 139040), (158, 131120), (160, 129481), (176, 117710), (220, 94168), (298, 69520), (316, 65560), (352, 58855), (395, 52448), (440, 47084), (596, 34760), (632, 32780), (745, 27808), (790, 26224), (869, 23840), (880, 23542), (1192, 17380), (1264, 16390), (1490, 13904), (1580, 13112), (1639, 12640), (1738, 11920), (1760, 11771), (2384, 8690), (2528, 8195), (2980, 6952), (3160, 6556), (3278, 6320), (3476, 5960), (4345, 4768)]