28671760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1451}}^1$

素因数の和:1496

約数の個数: 80

約数和(自身を含む): 75620160

約数和(自身を除く): 46948400

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, 1451, 1520, 1976, 2470, 2902, 3952, 4940, 5804, 7255, 9880, 11608, 14510, 18863, 19760, 23216, 27569, 29020, 37726, 55138, 58040, 75452, 94315, 110276, 116080, 137845, 150904, 188630, 220552, 275690, 301808, 358397, 377260, 441104, 551380, 716794, 754520, 1102760, 1433588, 1509040, 1791985, 2205520, 2867176, 3583970, 5734352, 7167940, 14335880, 28671760]

約数ペア:

[(1, 28671760), (2, 14335880), (4, 7167940), (5, 5734352), (8, 3583970), (10, 2867176), (13, 2205520), (16, 1791985), (19, 1509040), (20, 1433588), (26, 1102760), (38, 754520), (40, 716794), (52, 551380), (65, 441104), (76, 377260), (80, 358397), (95, 301808), (104, 275690), (130, 220552), (152, 188630), (190, 150904), (208, 137845), (247, 116080), (260, 110276), (304, 94315), (380, 75452), (494, 58040), (520, 55138), (760, 37726), (988, 29020), (1040, 27569), (1235, 23216), (1451, 19760), (1520, 18863), (1976, 14510), (2470, 11608), (2902, 9880), (3952, 7255), (4940, 5804)]