20512323080

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1823}}^1\times {\mathrm{16547}}^1$

素因数の和:18398

約数の個数: 64

約数和(自身を含む): 48897354240

約数和(自身を除く): 28385031160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 1823, 3646, 7292, 9115, 14584, 16547, 18230, 30991, 33094, 36460, 61982, 66188, 72920, 82735, 123964, 132376, 154955, 165470, 247928, 281299, 309910, 330940, 562598, 619820, 661880, 1125196, 1239640, 1406495, 2250392, 2812990, 5625980, 11251960, 30165181, 60330362, 120660724, 150825905, 241321448, 301651810, 512808077, 603303620, 1025616154, 1206607240, 2051232308, 2564040385, 4102464616, 5128080770, 10256161540, 20512323080]

約数ペア:

[(1, 20512323080), (2, 10256161540), (4, 5128080770), (5, 4102464616), (8, 2564040385), (10, 2051232308), (17, 1206607240), (20, 1025616154), (34, 603303620), (40, 512808077), (68, 301651810), (85, 241321448), (136, 150825905), (170, 120660724), (340, 60330362), (680, 30165181), (1823, 11251960), (3646, 5625980), (7292, 2812990), (9115, 2250392), (14584, 1406495), (16547, 1239640), (18230, 1125196), (30991, 661880), (33094, 619820), (36460, 562598), (61982, 330940), (66188, 309910), (72920, 281299), (82735, 247928), (123964, 165470), (132376, 154955)]