21386365

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4273}}^1$

素因数の和:4309

約数の個数: 32

約数和(自身を含む): 34465536

約数和(自身を除く): 13079171

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 4273, 5005, 21365, 29911, 47003, 55549, 149555, 235015, 277745, 329021, 388843, 611039, 1645105, 1944215, 3055195, 4277273, 21386365]

約数ペア:

[(1, 21386365), (5, 4277273), (7, 3055195), (11, 1944215), (13, 1645105), (35, 611039), (55, 388843), (65, 329021), (77, 277745), (91, 235015), (143, 149555), (385, 55549), (455, 47003), (715, 29911), (1001, 21365), (4273, 5005)]