2605420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 5927040

約数和(自身を除く): 3321620

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 79, 85, 97, 158, 170, 194, 316, 340, 388, 395, 485, 790, 970, 1343, 1580, 1649, 1940, 2686, 3298, 5372, 6596, 6715, 7663, 8245, 13430, 15326, 16490, 26860, 30652, 32980, 38315, 76630, 130271, 153260, 260542, 521084, 651355, 1302710, 2605420]

約数ペア:

[(1, 2605420), (2, 1302710), (4, 651355), (5, 521084), (10, 260542), (17, 153260), (20, 130271), (34, 76630), (68, 38315), (79, 32980), (85, 30652), (97, 26860), (158, 16490), (170, 15326), (194, 13430), (316, 8245), (340, 7663), (388, 6715), (395, 6596), (485, 5372), (790, 3298), (970, 2686), (1343, 1940), (1580, 1649)]