19998570

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:351

約数の個数: 64

約数和(自身を含む): 50077440

約数和(自身を除く): 30078870

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 41, 71, 82, 123, 142, 205, 213, 229, 246, 355, 410, 426, 458, 615, 687, 710, 1065, 1145, 1230, 1374, 2130, 2290, 2911, 3435, 5822, 6870, 8733, 9389, 14555, 16259, 17466, 18778, 28167, 29110, 32518, 43665, 46945, 48777, 56334, 81295, 87330, 93890, 97554, 140835, 162590, 243885, 281670, 487770, 666619, 1333238, 1999857, 3333095, 3999714, 6666190, 9999285, 19998570]

約数ペア:

[(1, 19998570), (2, 9999285), (3, 6666190), (5, 3999714), (6, 3333095), (10, 1999857), (15, 1333238), (30, 666619), (41, 487770), (71, 281670), (82, 243885), (123, 162590), (142, 140835), (205, 97554), (213, 93890), (229, 87330), (246, 81295), (355, 56334), (410, 48777), (426, 46945), (458, 43665), (615, 32518), (687, 29110), (710, 28167), (1065, 18778), (1145, 17466), (1230, 16259), (1374, 14555), (2130, 9389), (2290, 8733), (2911, 6870), (3435, 5822)]