31971381

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 47496960

約数和(自身を除く): 15525579

約数列:

[1, 3, 13, 39, 61, 89, 151, 183, 267, 453, 793, 1157, 1963, 2379, 3471, 5429, 5889, 9211, 13439, 16287, 27633, 40317, 70577, 119743, 174707, 211731, 359229, 524121, 819779, 2459337, 10657127, 31971381]

約数ペア:

[(1, 31971381), (3, 10657127), (13, 2459337), (39, 819779), (61, 524121), (89, 359229), (151, 211731), (183, 174707), (267, 119743), (453, 70577), (793, 40317), (1157, 27633), (1963, 16287), (2379, 13439), (3471, 9211), (5429, 5889)]