31971225

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{271}}^1$

素因数の和:319

約数の個数: 72

約数和(自身を含む): 62801536

約数和(自身を除く): 30830311

約数列:

[1, 3, 5, 11, 13, 15, 25, 33, 39, 55, 65, 75, 121, 143, 165, 195, 271, 275, 325, 363, 429, 605, 715, 813, 825, 975, 1355, 1573, 1815, 2145, 2981, 3025, 3523, 3575, 4065, 4719, 6775, 7865, 8943, 9075, 10569, 10725, 14905, 17615, 20325, 23595, 32791, 38753, 39325, 44715, 52845, 74525, 88075, 98373, 116259, 117975, 163955, 193765, 223575, 264225, 426283, 491865, 581295, 819775, 968825, 1278849, 2131415, 2459325, 2906475, 6394245, 10657075, 31971225]

約数ペア:

[(1, 31971225), (3, 10657075), (5, 6394245), (11, 2906475), (13, 2459325), (15, 2131415), (25, 1278849), (33, 968825), (39, 819775), (55, 581295), (65, 491865), (75, 426283), (121, 264225), (143, 223575), (165, 193765), (195, 163955), (271, 117975), (275, 116259), (325, 98373), (363, 88075), (429, 74525), (605, 52845), (715, 44715), (813, 39325), (825, 38753), (975, 32791), (1355, 23595), (1573, 20325), (1815, 17615), (2145, 14905), (2981, 10725), (3025, 10569), (3523, 9075), (3575, 8943), (4065, 7865), (4719, 6775)]