21016765

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{691}}^1$

素因数の和:793

約数の個数: 32

約数和(自身を含む): 31887360

約数和(自身を除く): 10870595

約数列:

[1, 5, 7, 11, 35, 55, 77, 79, 385, 395, 553, 691, 869, 2765, 3455, 4345, 4837, 6083, 7601, 24185, 30415, 38005, 53207, 54589, 266035, 272945, 382123, 600479, 1910615, 3002395, 4203353, 21016765]

約数ペア:

[(1, 21016765), (5, 4203353), (7, 3002395), (11, 1910615), (35, 600479), (55, 382123), (77, 272945), (79, 266035), (385, 54589), (395, 53207), (553, 38005), (691, 30415), (869, 24185), (2765, 7601), (3455, 6083), (4345, 4837)]