21499425

素因数分解:

$3^5\times 5^2\times {\mathrm{3539}}^1$

素因数の和:3564

約数の個数: 36

約数和(自身を含む): 39945360

約数和(自身を除く): 18445935

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 243, 405, 675, 1215, 2025, 3539, 6075, 10617, 17695, 31851, 53085, 88475, 95553, 159255, 265425, 286659, 477765, 796275, 859977, 1433295, 2388825, 4299885, 7166475, 21499425]

約数ペア:

[(1, 21499425), (3, 7166475), (5, 4299885), (9, 2388825), (15, 1433295), (25, 859977), (27, 796275), (45, 477765), (75, 286659), (81, 265425), (135, 159255), (225, 95553), (243, 88475), (405, 53085), (675, 31851), (1215, 17695), (2025, 10617), (3539, 6075)]