61211975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:212

約数の個数: 48

約数和(自身を含む): 87181920

約数和(自身を除く): 25969945

約数列:

[1, 5, 11, 25, 41, 55, 61, 89, 205, 275, 305, 445, 451, 671, 979, 1025, 1525, 2225, 2255, 2501, 3355, 3649, 4895, 5429, 11275, 12505, 16775, 18245, 24475, 27145, 27511, 40139, 59719, 62525, 91225, 135725, 137555, 200695, 222589, 298595, 687775, 1003475, 1112945, 1492975, 2448479, 5564725, 12242395, 61211975]

約数ペア:

[(1, 61211975), (5, 12242395), (11, 5564725), (25, 2448479), (41, 1492975), (55, 1112945), (61, 1003475), (89, 687775), (205, 298595), (275, 222589), (305, 200695), (445, 137555), (451, 135725), (671, 91225), (979, 62525), (1025, 59719), (1525, 40139), (2225, 27511), (2255, 27145), (2501, 24475), (3355, 18245), (3649, 16775), (4895, 12505), (5429, 11275)]