72128469

素因数分解:

$3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{167}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 112121856

約数和(自身を除く): 39993387

約数列:

[1, 3, 7, 21, 131, 157, 167, 393, 471, 501, 917, 1099, 1169, 2751, 3297, 3507, 20567, 21877, 26219, 61701, 65631, 78657, 143969, 153139, 183533, 431907, 459417, 550599, 3434689, 10304067, 24042823, 72128469]

約数ペア:

[(1, 72128469), (3, 24042823), (7, 10304067), (21, 3434689), (131, 550599), (157, 459417), (167, 431907), (393, 183533), (471, 153139), (501, 143969), (917, 78657), (1099, 65631), (1169, 61701), (2751, 26219), (3297, 21877), (3507, 20567)]