660820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:112

約数の個数: 48

約数和(自身を含む): 1532160

約数和(自身を除く): 871340

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 47, 74, 76, 94, 95, 148, 185, 188, 190, 235, 370, 380, 470, 703, 740, 893, 940, 1406, 1739, 1786, 2812, 3478, 3515, 3572, 4465, 6956, 7030, 8695, 8930, 14060, 17390, 17860, 33041, 34780, 66082, 132164, 165205, 330410, 660820]

約数ペア:

[(1, 660820), (2, 330410), (4, 165205), (5, 132164), (10, 66082), (19, 34780), (20, 33041), (37, 17860), (38, 17390), (47, 14060), (74, 8930), (76, 8695), (94, 7030), (95, 6956), (148, 4465), (185, 3572), (188, 3515), (190, 3478), (235, 2812), (370, 1786), (380, 1739), (470, 1406), (703, 940), (740, 893)]