28078765

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{227}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 39989376

約数和(自身を除く): 11910611

約数列:

[1, 5, 11, 13, 55, 65, 143, 173, 227, 715, 865, 1135, 1903, 2249, 2497, 2951, 9515, 11245, 12485, 14755, 24739, 32461, 39271, 123695, 162305, 196355, 431981, 510523, 2159905, 2552615, 5615753, 28078765]

約数ペア:

[(1, 28078765), (5, 5615753), (11, 2552615), (13, 2159905), (55, 510523), (65, 431981), (143, 196355), (173, 162305), (227, 123695), (715, 39271), (865, 32461), (1135, 24739), (1903, 14755), (2249, 12485), (2497, 11245), (2951, 9515)]