289720120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{2141}}^1$

素因数の和:2368

約数の個数: 64

約数和(自身を含む): 694008000

約数和(自身を除く): 404287880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 199, 340, 398, 680, 796, 995, 1592, 1990, 2141, 3383, 3980, 4282, 6766, 7960, 8564, 10705, 13532, 16915, 17128, 21410, 27064, 33830, 36397, 42820, 67660, 72794, 85640, 135320, 145588, 181985, 291176, 363970, 426059, 727940, 852118, 1455880, 1704236, 2130295, 3408472, 4260590, 7243003, 8521180, 14486006, 17042360, 28972012, 36215015, 57944024, 72430030, 144860060, 289720120]

約数ペア:

[(1, 289720120), (2, 144860060), (4, 72430030), (5, 57944024), (8, 36215015), (10, 28972012), (17, 17042360), (20, 14486006), (34, 8521180), (40, 7243003), (68, 4260590), (85, 3408472), (136, 2130295), (170, 1704236), (199, 1455880), (340, 852118), (398, 727940), (680, 426059), (796, 363970), (995, 291176), (1592, 181985), (1990, 145588), (2141, 135320), (3383, 85640), (3980, 72794), (4282, 67660), (6766, 42820), (7960, 36397), (8564, 33830), (10705, 27064), (13532, 21410), (16915, 17128)]