20896460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{449}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 47628000

約数和(自身を除く): 26731540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 179, 260, 358, 449, 716, 895, 898, 1790, 1796, 2245, 2327, 3580, 4490, 4654, 5837, 8980, 9308, 11635, 11674, 23270, 23348, 29185, 46540, 58370, 80371, 116740, 160742, 321484, 401855, 803710, 1044823, 1607420, 2089646, 4179292, 5224115, 10448230, 20896460]

約数ペア:

[(1, 20896460), (2, 10448230), (4, 5224115), (5, 4179292), (10, 2089646), (13, 1607420), (20, 1044823), (26, 803710), (52, 401855), (65, 321484), (130, 160742), (179, 116740), (260, 80371), (358, 58370), (449, 46540), (716, 29185), (895, 23348), (898, 23270), (1790, 11674), (1796, 11635), (2245, 9308), (2327, 8980), (3580, 5837), (4490, 4654)]