217391065

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{761}}^1$

素因数の和:913

約数の個数: 32

約数和(自身を含む): 286755840

約数和(自身を除く): 69364775

約数列:

[1, 5, 19, 31, 95, 97, 155, 485, 589, 761, 1843, 2945, 3007, 3805, 9215, 14459, 15035, 23591, 57133, 72295, 73817, 117955, 285665, 369085, 448229, 1402523, 2241145, 2288327, 7012615, 11441635, 43478213, 217391065]

約数ペア:

[(1, 217391065), (5, 43478213), (19, 11441635), (31, 7012615), (95, 2288327), (97, 2241145), (155, 1402523), (485, 448229), (589, 369085), (761, 285665), (1843, 117955), (2945, 73817), (3007, 72295), (3805, 57133), (9215, 23591), (14459, 15035)]