21951215

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{2791}}^1$

素因数の和:2831

約数の個数: 24

約数和(自身を含む): 31192224

約数和(自身を除く): 9241009

約数列:

[1, 5, 11, 13, 55, 65, 121, 143, 605, 715, 1573, 2791, 7865, 13955, 30701, 36283, 153505, 181415, 337711, 399113, 1688555, 1995565, 4390243, 21951215]

約数ペア:

[(1, 21951215), (5, 4390243), (11, 1995565), (13, 1688555), (55, 399113), (65, 337711), (121, 181415), (143, 153505), (605, 36283), (715, 30701), (1573, 13955), (2791, 7865)]