201780855

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{811}}^1$

素因数の和:941

約数の個数: 64

約数和(自身を含む): 381964800

約数和(自身を除く): 180183945

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 97, 135, 171, 285, 291, 485, 513, 811, 855, 873, 1455, 1843, 2433, 2565, 2619, 4055, 4365, 5529, 7299, 9215, 12165, 13095, 15409, 16587, 21897, 27645, 36495, 46227, 49761, 77045, 78667, 82935, 109485, 138681, 231135, 236001, 248805, 393335, 416043, 693405, 708003, 1180005, 1494673, 2080215, 2124009, 3540015, 4484019, 7473365, 10620045, 13452057, 22420095, 40356171, 67260285, 201780855]

約数ペア:

[(1, 201780855), (3, 67260285), (5, 40356171), (9, 22420095), (15, 13452057), (19, 10620045), (27, 7473365), (45, 4484019), (57, 3540015), (95, 2124009), (97, 2080215), (135, 1494673), (171, 1180005), (285, 708003), (291, 693405), (485, 416043), (513, 393335), (811, 248805), (855, 236001), (873, 231135), (1455, 138681), (1843, 109485), (2433, 82935), (2565, 78667), (2619, 77045), (4055, 49761), (4365, 46227), (5529, 36495), (7299, 27645), (9215, 21897), (12165, 16587), (13095, 15409)]