21100755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{449}}^1$

素因数の和:711

約数の個数: 32

約数和(自身を含む): 36590400

約数和(自身を除く): 15489645

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 241, 449, 723, 1205, 1347, 2245, 3133, 3615, 5837, 6735, 9399, 15665, 17511, 29185, 46995, 87555, 108209, 324627, 541045, 1406717, 1623135, 4220151, 7033585, 21100755]

約数ペア:

[(1, 21100755), (3, 7033585), (5, 4220151), (13, 1623135), (15, 1406717), (39, 541045), (65, 324627), (195, 108209), (241, 87555), (449, 46995), (723, 29185), (1205, 17511), (1347, 15665), (2245, 9399), (3133, 6735), (3615, 5837)]