31286320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{449}}^1$

素因数の和:542

約数の個数: 80

約数和(自身を含む): 79682400

約数和(自身を除く): 48396080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 67, 80, 104, 130, 134, 208, 260, 268, 335, 449, 520, 536, 670, 871, 898, 1040, 1072, 1340, 1742, 1796, 2245, 2680, 3484, 3592, 4355, 4490, 5360, 5837, 6968, 7184, 8710, 8980, 11674, 13936, 17420, 17960, 23348, 29185, 30083, 34840, 35920, 46696, 58370, 60166, 69680, 93392, 116740, 120332, 150415, 233480, 240664, 300830, 391079, 466960, 481328, 601660, 782158, 1203320, 1564316, 1955395, 2406640, 3128632, 3910790, 6257264, 7821580, 15643160, 31286320]

約数ペア:

[(1, 31286320), (2, 15643160), (4, 7821580), (5, 6257264), (8, 3910790), (10, 3128632), (13, 2406640), (16, 1955395), (20, 1564316), (26, 1203320), (40, 782158), (52, 601660), (65, 481328), (67, 466960), (80, 391079), (104, 300830), (130, 240664), (134, 233480), (208, 150415), (260, 120332), (268, 116740), (335, 93392), (449, 69680), (520, 60166), (536, 58370), (670, 46696), (871, 35920), (898, 34840), (1040, 30083), (1072, 29185), (1340, 23348), (1742, 17960), (1796, 17420), (2245, 13936), (2680, 11674), (3484, 8980), (3592, 8710), (4355, 7184), (4490, 6968), (5360, 5837)]