19721640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1103}}^1$

素因数の和:1266

約数の個数: 64

約数和(自身を含む): 59616000

約数和(自身を除く): 39894360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 149, 298, 447, 596, 745, 894, 1103, 1192, 1490, 1788, 2206, 2235, 2980, 3309, 3576, 4412, 4470, 5515, 5960, 6618, 8824, 8940, 11030, 13236, 16545, 17880, 22060, 26472, 33090, 44120, 66180, 132360, 164347, 328694, 493041, 657388, 821735, 986082, 1314776, 1643470, 1972164, 2465205, 3286940, 3944328, 4930410, 6573880, 9860820, 19721640]

約数ペア:

[(1, 19721640), (2, 9860820), (3, 6573880), (4, 4930410), (5, 3944328), (6, 3286940), (8, 2465205), (10, 1972164), (12, 1643470), (15, 1314776), (20, 986082), (24, 821735), (30, 657388), (40, 493041), (60, 328694), (120, 164347), (149, 132360), (298, 66180), (447, 44120), (596, 33090), (745, 26472), (894, 22060), (1103, 17880), (1192, 16545), (1490, 13236), (1788, 11030), (2206, 8940), (2235, 8824), (2980, 6618), (3309, 5960), (3576, 5515), (4412, 4470)]