7821580

素因数分解:

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

素因数の和:538

約数の個数: 48

約数和(自身を含む): 17992800

約数和(自身を除く): 10171220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 335, 449, 670, 871, 898, 1340, 1742, 1796, 2245, 3484, 4355, 4490, 5837, 8710, 8980, 11674, 17420, 23348, 29185, 30083, 58370, 60166, 116740, 120332, 150415, 300830, 391079, 601660, 782158, 1564316, 1955395, 3910790, 7821580]

約数ペア:

[(1, 7821580), (2, 3910790), (4, 1955395), (5, 1564316), (10, 782158), (13, 601660), (20, 391079), (26, 300830), (52, 150415), (65, 120332), (67, 116740), (130, 60166), (134, 58370), (260, 30083), (268, 29185), (335, 23348), (449, 17420), (670, 11674), (871, 8980), (898, 8710), (1340, 5837), (1742, 4490), (1796, 4355), (2245, 3484)]