21881925

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7481}}^1$

素因数の和:7510

約数の個数: 36

約数和(自身を含む): 42213444

約数和(自身を除く): 20331519

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7481, 22443, 37405, 67329, 97253, 112215, 187025, 291759, 336645, 486265, 561075, 875277, 1458795, 1683225, 2431325, 4376385, 7293975, 21881925]

約数ペア:

[(1, 21881925), (3, 7293975), (5, 4376385), (9, 2431325), (13, 1683225), (15, 1458795), (25, 875277), (39, 561075), (45, 486265), (65, 336645), (75, 291759), (117, 187025), (195, 112215), (225, 97253), (325, 67329), (585, 37405), (975, 22443), (2925, 7481)]