21880395

素因数分解:

$3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2657}}^1$

素因数の和:2732

約数の個数: 32

約数和(自身を含む): 39551040

約数和(自身を除く): 17670645

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 135, 183, 305, 549, 915, 1647, 2657, 2745, 7971, 8235, 13285, 23913, 39855, 71739, 119565, 162077, 358695, 486231, 810385, 1458693, 2431155, 4376079, 7293465, 21880395]

約数ペア:

[(1, 21880395), (3, 7293465), (5, 4376079), (9, 2431155), (15, 1458693), (27, 810385), (45, 486231), (61, 358695), (135, 162077), (183, 119565), (305, 71739), (549, 39855), (915, 23913), (1647, 13285), (2657, 8235), (2745, 7971)]