20943975

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21481}}^1$

素因数の和:21507

約数の個数: 24

約数和(自身を含む): 37292752

約数和(自身を除く): 16348777

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 21481, 64443, 107405, 279253, 322215, 537025, 837759, 1396265, 1611075, 4188795, 6981325, 20943975]

約数ペア:

[(1, 20943975), (3, 6981325), (5, 4188795), (13, 1611075), (15, 1396265), (25, 837759), (39, 537025), (65, 322215), (75, 279253), (195, 107405), (325, 64443), (975, 21481)]