21401972

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{239}}^1\times {\mathrm{367}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 38330880

約数和(自身を除く): 16928908

約数列:

[1, 2, 4, 61, 122, 239, 244, 367, 478, 734, 956, 1468, 14579, 22387, 29158, 44774, 58316, 87713, 89548, 175426, 350852, 5350493, 10700986, 21401972]

約数ペア:

[(1, 21401972), (2, 10700986), (4, 5350493), (61, 350852), (122, 175426), (239, 89548), (244, 87713), (367, 58316), (478, 44774), (734, 29158), (956, 22387), (1468, 14579)]