21103715

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{8009}}^1$

素因数の和:8062

約数の個数: 16

約数和(自身を含む): 27682560

約数和(自身を除く): 6578845

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 8009, 40045, 136153, 248279, 680765, 1241395, 4220743, 21103715]

約数ペア:

[(1, 21103715), (5, 4220743), (17, 1241395), (31, 680765), (85, 248279), (155, 136153), (527, 40045), (2635, 8009)]