1999638520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{57527}}^1$

素因数の和:57628

約数の個数: 64

約数和(自身を含む): 4970419200

約数和(自身を除く): 2970780680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 79, 88, 110, 158, 220, 316, 395, 440, 632, 790, 869, 1580, 1738, 3160, 3476, 4345, 6952, 8690, 17380, 34760, 57527, 115054, 230108, 287635, 460216, 575270, 632797, 1150540, 1265594, 2301080, 2531188, 3163985, 4544633, 5062376, 6327970, 9089266, 12655940, 18178532, 22723165, 25311880, 36357064, 45446330, 49990963, 90892660, 99981926, 181785320, 199963852, 249954815, 399927704, 499909630, 999819260, 1999638520]

約数ペア:

[(1, 1999638520), (2, 999819260), (4, 499909630), (5, 399927704), (8, 249954815), (10, 199963852), (11, 181785320), (20, 99981926), (22, 90892660), (40, 49990963), (44, 45446330), (55, 36357064), (79, 25311880), (88, 22723165), (110, 18178532), (158, 12655940), (220, 9089266), (316, 6327970), (395, 5062376), (440, 4544633), (632, 3163985), (790, 2531188), (869, 2301080), (1580, 1265594), (1738, 1150540), (3160, 632797), (3476, 575270), (4345, 460216), (6952, 287635), (8690, 230108), (17380, 115054), (34760, 57527)]