21152803994

素因数分解:

$2^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{10869889}}^1$

素因数の和:10870037

約数の個数: 16

約数和(自身を含む): 36522830400

約数和(自身を除く): 15370026406

約数列:

[1, 2, 7, 14, 139, 278, 973, 1946, 10869889, 21739778, 76089223, 152178446, 1510914571, 3021829142, 10576401997, 21152803994]

約数ペア:

[(1, 21152803994), (2, 10576401997), (7, 3021829142), (14, 1510914571), (139, 152178446), (278, 76089223), (973, 21739778), (1946, 10869889)]