81801960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{40099}}^1$

素因数の和:40130

約数の個数: 64

約数和(自身を含む): 259848000

約数和(自身を除く): 178046040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 40099, 80198, 120297, 160396, 200495, 240594, 320792, 400990, 481188, 601485, 681683, 801980, 962376, 1202970, 1363366, 1603960, 2045049, 2405940, 2726732, 3408415, 4090098, 4811880, 5453464, 6816830, 8180196, 10225245, 13633660, 16360392, 20450490, 27267320, 40900980, 81801960]

約数ペア:

[(1, 81801960), (2, 40900980), (3, 27267320), (4, 20450490), (5, 16360392), (6, 13633660), (8, 10225245), (10, 8180196), (12, 6816830), (15, 5453464), (17, 4811880), (20, 4090098), (24, 3408415), (30, 2726732), (34, 2405940), (40, 2045049), (51, 1603960), (60, 1363366), (68, 1202970), (85, 962376), (102, 801980), (120, 681683), (136, 601485), (170, 481188), (204, 400990), (255, 320792), (340, 240594), (408, 200495), (510, 160396), (680, 120297), (1020, 80198), (2040, 40099)]