20785544

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 45124800

約数和(自身を除く): 24339256

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 67, 76, 104, 134, 152, 157, 247, 268, 314, 494, 536, 628, 871, 988, 1256, 1273, 1742, 1976, 2041, 2546, 2983, 3484, 4082, 5092, 5966, 6968, 8164, 10184, 10519, 11932, 16328, 16549, 21038, 23864, 33098, 38779, 42076, 66196, 77558, 84152, 132392, 136747, 155116, 199861, 273494, 310232, 399722, 546988, 799444, 1093976, 1598888, 2598193, 5196386, 10392772, 20785544]

約数ペア:

[(1, 20785544), (2, 10392772), (4, 5196386), (8, 2598193), (13, 1598888), (19, 1093976), (26, 799444), (38, 546988), (52, 399722), (67, 310232), (76, 273494), (104, 199861), (134, 155116), (152, 136747), (157, 132392), (247, 84152), (268, 77558), (314, 66196), (494, 42076), (536, 38779), (628, 33098), (871, 23864), (988, 21038), (1256, 16549), (1273, 16328), (1742, 11932), (1976, 10519), (2041, 10184), (2546, 8164), (2983, 6968), (3484, 5966), (4082, 5092)]