21293499

素因数分解:

$3^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1\times {\mathrm{503}}^1$

素因数の和:746

約数の個数: 16

約数和(自身を含む): 28933632

約数和(自身を除く): 7640133

約数列:

[1, 3, 103, 137, 309, 411, 503, 1509, 14111, 42333, 51809, 68911, 155427, 206733, 7097833, 21293499]

約数ペア:

[(1, 21293499), (3, 7097833), (103, 206733), (137, 155427), (309, 68911), (411, 51809), (503, 42333), (1509, 14111)]