165719240

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:510

約数の個数: 64

約数和(自身を含む): 380160000

約数和(自身を除く): 214440760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 191, 199, 218, 382, 398, 436, 545, 764, 796, 872, 955, 995, 1090, 1528, 1592, 1910, 1990, 2180, 3820, 3980, 4360, 7640, 7960, 20819, 21691, 38009, 41638, 43382, 76018, 83276, 86764, 104095, 108455, 152036, 166552, 173528, 190045, 208190, 216910, 304072, 380090, 416380, 433820, 760180, 832760, 867640, 1520360, 4142981, 8285962, 16571924, 20714905, 33143848, 41429810, 82859620, 165719240]

約数ペア:

[(1, 165719240), (2, 82859620), (4, 41429810), (5, 33143848), (8, 20714905), (10, 16571924), (20, 8285962), (40, 4142981), (109, 1520360), (191, 867640), (199, 832760), (218, 760180), (382, 433820), (398, 416380), (436, 380090), (545, 304072), (764, 216910), (796, 208190), (872, 190045), (955, 173528), (995, 166552), (1090, 152036), (1528, 108455), (1592, 104095), (1910, 86764), (1990, 83276), (2180, 76018), (3820, 43382), (3980, 41638), (4360, 38009), (7640, 21691), (7960, 20819)]