1561660779

素因数分解:

$3^1\times 7^1\times {\mathrm{1999}}^1\times {\mathrm{37201}}^1$

素因数の和:39210

約数の個数: 16

約数和(自身を含む): 2380928000

約数和(自身を除く): 819267221

約数列:

[1, 3, 7, 21, 1999, 5997, 13993, 37201, 41979, 111603, 260407, 781221, 74364799, 223094397, 520553593, 1561660779]

約数ペア:

[(1, 1561660779), (3, 520553593), (7, 223094397), (21, 74364799), (1999, 781221), (5997, 260407), (13993, 111603), (37201, 41979)]