20646160

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1$

素因数の和:113

約数の個数: 120

約数和(自身を含む): 54817920

約数和(自身を除く): 34171760

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 47, 68, 76, 80, 85, 94, 95, 136, 152, 170, 188, 190, 235, 272, 289, 304, 323, 340, 376, 380, 470, 578, 646, 680, 752, 760, 799, 893, 940, 1156, 1292, 1360, 1445, 1520, 1598, 1615, 1786, 1880, 2312, 2584, 2890, 3196, 3230, 3572, 3760, 3995, 4465, 4624, 5168, 5491, 5780, 6392, 6460, 7144, 7990, 8930, 10982, 11560, 12784, 12920, 13583, 14288, 15181, 15980, 17860, 21964, 23120, 25840, 27166, 27455, 30362, 31960, 35720, 43928, 54332, 54910, 60724, 63920, 67915, 71440, 75905, 87856, 108664, 109820, 121448, 135830, 151810, 217328, 219640, 242896, 258077, 271660, 303620, 439280, 516154, 543320, 607240, 1032308, 1086640, 1214480, 1290385, 2064616, 2580770, 4129232, 5161540, 10323080, 20646160]

約数ペア:

[(1, 20646160), (2, 10323080), (4, 5161540), (5, 4129232), (8, 2580770), (10, 2064616), (16, 1290385), (17, 1214480), (19, 1086640), (20, 1032308), (34, 607240), (38, 543320), (40, 516154), (47, 439280), (68, 303620), (76, 271660), (80, 258077), (85, 242896), (94, 219640), (95, 217328), (136, 151810), (152, 135830), (170, 121448), (188, 109820), (190, 108664), (235, 87856), (272, 75905), (289, 71440), (304, 67915), (323, 63920), (340, 60724), (376, 54910), (380, 54332), (470, 43928), (578, 35720), (646, 31960), (680, 30362), (752, 27455), (760, 27166), (799, 25840), (893, 23120), (940, 21964), (1156, 17860), (1292, 15980), (1360, 15181), (1445, 14288), (1520, 13583), (1598, 12920), (1615, 12784), (1786, 11560), (1880, 10982), (2312, 8930), (2584, 7990), (2890, 7144), (3196, 6460), (3230, 6392), (3572, 5780), (3760, 5491), (3995, 5168), (4465, 4624)]