31530785

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 47369280

約数和(自身を除く): 15838495

約数列:

[1, 5, 11, 13, 19, 55, 65, 95, 121, 143, 209, 211, 247, 605, 715, 1045, 1055, 1235, 1573, 2299, 2321, 2717, 2743, 4009, 7865, 11495, 11605, 13585, 13715, 20045, 25531, 29887, 30173, 44099, 52117, 127655, 149435, 150865, 220495, 260585, 331903, 485089, 573287, 1659515, 2425445, 2866435, 6306157, 31530785]

約数ペア:

[(1, 31530785), (5, 6306157), (11, 2866435), (13, 2425445), (19, 1659515), (55, 573287), (65, 485089), (95, 331903), (121, 260585), (143, 220495), (209, 150865), (211, 149435), (247, 127655), (605, 52117), (715, 44099), (1045, 30173), (1055, 29887), (1235, 25531), (1573, 20045), (2299, 13715), (2321, 13585), (2717, 11605), (2743, 11495), (4009, 7865)]