21560649

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{251}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 33384960

約数和(自身を除く): 11824311

約数列:

[1, 3, 11, 19, 33, 57, 137, 209, 251, 411, 627, 753, 1507, 2603, 2761, 4521, 4769, 7809, 8283, 14307, 28633, 34387, 52459, 85899, 103161, 157377, 378257, 653353, 1134771, 1960059, 7186883, 21560649]

約数ペア:

[(1, 21560649), (3, 7186883), (11, 1960059), (19, 1134771), (33, 653353), (57, 378257), (137, 157377), (209, 103161), (251, 85899), (411, 52459), (627, 34387), (753, 28633), (1507, 14307), (2603, 8283), (2761, 7809), (4521, 4769)]