1321640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:114

約数の個数: 64

約数和(自身を含む): 3283200

約数和(自身を除く): 1961560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 37, 38, 40, 47, 74, 76, 94, 95, 148, 152, 185, 188, 190, 235, 296, 370, 376, 380, 470, 703, 740, 760, 893, 940, 1406, 1480, 1739, 1786, 1880, 2812, 3478, 3515, 3572, 4465, 5624, 6956, 7030, 7144, 8695, 8930, 13912, 14060, 17390, 17860, 28120, 33041, 34780, 35720, 66082, 69560, 132164, 165205, 264328, 330410, 660820, 1321640]

約数ペア:

[(1, 1321640), (2, 660820), (4, 330410), (5, 264328), (8, 165205), (10, 132164), (19, 69560), (20, 66082), (37, 35720), (38, 34780), (40, 33041), (47, 28120), (74, 17860), (76, 17390), (94, 14060), (95, 13912), (148, 8930), (152, 8695), (185, 7144), (188, 7030), (190, 6956), (235, 5624), (296, 4465), (370, 3572), (376, 3515), (380, 3478), (470, 2812), (703, 1880), (740, 1786), (760, 1739), (893, 1480), (940, 1406)]