1990352860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{74101}}^1$

素因数の和:74206

約数の個数: 48

約数和(自身を含む): 4481688960

約数和(自身を除く): 2491336100

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 79, 85, 158, 170, 316, 340, 395, 790, 1343, 1580, 2686, 5372, 6715, 13430, 26860, 74101, 148202, 296404, 370505, 741010, 1259717, 1482020, 2519434, 5038868, 5853979, 6298585, 11707958, 12597170, 23415916, 25194340, 29269895, 58539790, 99517643, 117079580, 199035286, 398070572, 497588215, 995176430, 1990352860]

約数ペア:

[(1, 1990352860), (2, 995176430), (4, 497588215), (5, 398070572), (10, 199035286), (17, 117079580), (20, 99517643), (34, 58539790), (68, 29269895), (79, 25194340), (85, 23415916), (158, 12597170), (170, 11707958), (316, 6298585), (340, 5853979), (395, 5038868), (790, 2519434), (1343, 1482020), (1580, 1259717), (2686, 741010), (5372, 370505), (6715, 296404), (13430, 148202), (26860, 74101)]