31280080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1583}}^1$

素因数の和:1628

約数の個数: 80

約数和(自身を含む): 82494720

約数和(自身を除く): 51214640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1583, 1976, 2470, 3166, 3952, 4940, 6332, 7915, 9880, 12664, 15830, 19760, 20579, 25328, 30077, 31660, 41158, 60154, 63320, 82316, 102895, 120308, 126640, 150385, 164632, 205790, 240616, 300770, 329264, 391001, 411580, 481232, 601540, 782002, 823160, 1203080, 1564004, 1646320, 1955005, 2406160, 3128008, 3910010, 6256016, 7820020, 15640040, 31280080]

約数ペア:

[(1, 31280080), (2, 15640040), (4, 7820020), (5, 6256016), (8, 3910010), (10, 3128008), (13, 2406160), (16, 1955005), (19, 1646320), (20, 1564004), (26, 1203080), (38, 823160), (40, 782002), (52, 601540), (65, 481232), (76, 411580), (80, 391001), (95, 329264), (104, 300770), (130, 240616), (152, 205790), (190, 164632), (208, 150385), (247, 126640), (260, 120308), (304, 102895), (380, 82316), (494, 63320), (520, 60154), (760, 41158), (988, 31660), (1040, 30077), (1235, 25328), (1520, 20579), (1583, 19760), (1976, 15830), (2470, 12664), (3166, 9880), (3952, 7915), (4940, 6332)]