80784080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{449}}^1$

素因数の和:648

約数の個数: 80

約数和(自身を含む): 203893200

約数和(自身を除く): 123109120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 173, 208, 260, 346, 449, 520, 692, 865, 898, 1040, 1384, 1730, 1796, 2245, 2249, 2768, 3460, 3592, 4490, 4498, 5837, 6920, 7184, 8980, 8996, 11245, 11674, 13840, 17960, 17992, 22490, 23348, 29185, 35920, 35984, 44980, 46696, 58370, 77677, 89960, 93392, 116740, 155354, 179920, 233480, 310708, 388385, 466960, 621416, 776770, 1009801, 1242832, 1553540, 2019602, 3107080, 4039204, 5049005, 6214160, 8078408, 10098010, 16156816, 20196020, 40392040, 80784080]

約数ペア:

[(1, 80784080), (2, 40392040), (4, 20196020), (5, 16156816), (8, 10098010), (10, 8078408), (13, 6214160), (16, 5049005), (20, 4039204), (26, 3107080), (40, 2019602), (52, 1553540), (65, 1242832), (80, 1009801), (104, 776770), (130, 621416), (173, 466960), (208, 388385), (260, 310708), (346, 233480), (449, 179920), (520, 155354), (692, 116740), (865, 93392), (898, 89960), (1040, 77677), (1384, 58370), (1730, 46696), (1796, 44980), (2245, 35984), (2249, 35920), (2768, 29185), (3460, 23348), (3592, 22490), (4490, 17992), (4498, 17960), (5837, 13840), (6920, 11674), (7184, 11245), (8980, 8996)]