21275555

素因数分解:

$5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2347}}^1$

素因数の和:2403

約数の個数: 24

約数和(自身を含む): 30514608

約数和(自身を除く): 9239053

約数列:

[1, 5, 7, 35, 37, 49, 185, 245, 259, 1295, 1813, 2347, 9065, 11735, 16429, 82145, 86839, 115003, 434195, 575015, 607873, 3039365, 4255111, 21275555]

約数ペア:

[(1, 21275555), (5, 4255111), (7, 3039365), (35, 607873), (37, 575015), (49, 434195), (185, 115003), (245, 86839), (259, 82145), (1295, 16429), (1813, 11735), (2347, 9065)]