215423405

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{1091}}^1$

素因数の和:1237

約数の個数: 32

約数和(自身を含む): 288707328

約数和(自身を除く): 73283923

約数列:

[1, 5, 17, 23, 85, 101, 115, 391, 505, 1091, 1717, 1955, 2323, 5455, 8585, 11615, 18547, 25093, 39491, 92735, 110191, 125465, 197455, 426581, 550955, 1873247, 2132905, 2534393, 9366235, 12671965, 43084681, 215423405]

約数ペア:

[(1, 215423405), (5, 43084681), (17, 12671965), (23, 9366235), (85, 2534393), (101, 2132905), (115, 1873247), (391, 550955), (505, 426581), (1091, 197455), (1717, 125465), (1955, 110191), (2323, 92735), (5455, 39491), (8585, 25093), (11615, 18547)]