20290088

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{593}}^1$

素因数の和:666

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 27610072

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 47, 52, 56, 91, 94, 104, 182, 188, 329, 364, 376, 593, 611, 658, 728, 1186, 1222, 1316, 2372, 2444, 2632, 4151, 4277, 4744, 4888, 7709, 8302, 8554, 15418, 16604, 17108, 27871, 30836, 33208, 34216, 53963, 55742, 61672, 107926, 111484, 195097, 215852, 222968, 362323, 390194, 431704, 724646, 780388, 1449292, 1560776, 2536261, 2898584, 5072522, 10145044, 20290088]

約数ペア:

[(1, 20290088), (2, 10145044), (4, 5072522), (7, 2898584), (8, 2536261), (13, 1560776), (14, 1449292), (26, 780388), (28, 724646), (47, 431704), (52, 390194), (56, 362323), (91, 222968), (94, 215852), (104, 195097), (182, 111484), (188, 107926), (329, 61672), (364, 55742), (376, 53963), (593, 34216), (611, 33208), (658, 30836), (728, 27871), (1186, 17108), (1222, 16604), (1316, 15418), (2372, 8554), (2444, 8302), (2632, 7709), (4151, 4888), (4277, 4744)]