20164598680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1\times {\mathrm{30971}}^1$

素因数の和:31420

約数の個数: 64

約数和(自身を含む): 46595515680

約数和(自身を除く): 26430917000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 397, 410, 794, 820, 1588, 1640, 1985, 3176, 3970, 7940, 15880, 16277, 30971, 32554, 61942, 65108, 81385, 123884, 130216, 154855, 162770, 247768, 309710, 325540, 619420, 651080, 1238840, 1269811, 2539622, 5079244, 6349055, 10158488, 12295487, 12698110, 24590974, 25396220, 49181948, 50792440, 61477435, 98363896, 122954870, 245909740, 491819480, 504114967, 1008229934, 2016459868, 2520574835, 4032919736, 5041149670, 10082299340, 20164598680]

約数ペア:

[(1, 20164598680), (2, 10082299340), (4, 5041149670), (5, 4032919736), (8, 2520574835), (10, 2016459868), (20, 1008229934), (40, 504114967), (41, 491819480), (82, 245909740), (164, 122954870), (205, 98363896), (328, 61477435), (397, 50792440), (410, 49181948), (794, 25396220), (820, 24590974), (1588, 12698110), (1640, 12295487), (1985, 10158488), (3176, 6349055), (3970, 5079244), (7940, 2539622), (15880, 1269811), (16277, 1238840), (30971, 651080), (32554, 619420), (61942, 325540), (65108, 309710), (81385, 247768), (123884, 162770), (130216, 154855)]