261072080

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^2\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:289

約数の個数: 120

約数和(自身を含む): 658291200

約数和(自身を除く): 397219120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 40, 46, 62, 80, 92, 115, 124, 155, 184, 199, 230, 248, 310, 368, 398, 460, 496, 529, 620, 713, 796, 920, 995, 1058, 1240, 1426, 1592, 1840, 1990, 2116, 2480, 2645, 2852, 3184, 3565, 3980, 4232, 4577, 5290, 5704, 6169, 7130, 7960, 8464, 9154, 10580, 11408, 12338, 14260, 15920, 16399, 18308, 21160, 22885, 24676, 28520, 30845, 32798, 36616, 42320, 45770, 49352, 57040, 61690, 65596, 73232, 81995, 91540, 98704, 105271, 123380, 131192, 141887, 163990, 183080, 210542, 246760, 262384, 283774, 327980, 366160, 421084, 493520, 526355, 567548, 655960, 709435, 842168, 1052710, 1135096, 1311920, 1418870, 1684336, 2105420, 2270192, 2837740, 3263401, 4210840, 5675480, 6526802, 8421680, 11350960, 13053604, 16317005, 26107208, 32634010, 52214416, 65268020, 130536040, 261072080]

約数ペア:

[(1, 261072080), (2, 130536040), (4, 65268020), (5, 52214416), (8, 32634010), (10, 26107208), (16, 16317005), (20, 13053604), (23, 11350960), (31, 8421680), (40, 6526802), (46, 5675480), (62, 4210840), (80, 3263401), (92, 2837740), (115, 2270192), (124, 2105420), (155, 1684336), (184, 1418870), (199, 1311920), (230, 1135096), (248, 1052710), (310, 842168), (368, 709435), (398, 655960), (460, 567548), (496, 526355), (529, 493520), (620, 421084), (713, 366160), (796, 327980), (920, 283774), (995, 262384), (1058, 246760), (1240, 210542), (1426, 183080), (1592, 163990), (1840, 141887), (1990, 131192), (2116, 123380), (2480, 105271), (2645, 98704), (2852, 91540), (3184, 81995), (3565, 73232), (3980, 65596), (4232, 61690), (4577, 57040), (5290, 49352), (5704, 45770), (6169, 42320), (7130, 36616), (7960, 32798), (8464, 30845), (9154, 28520), (10580, 24676), (11408, 22885), (12338, 21160), (14260, 18308), (15920, 16399)]