20483120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{463}}^1$

素因数の和:562

約数の個数: 80

約数和(自身を含む): 55234560

約数和(自身を除く): 34751440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 79, 80, 112, 140, 158, 280, 316, 395, 463, 553, 560, 632, 790, 926, 1106, 1264, 1580, 1852, 2212, 2315, 2765, 3160, 3241, 3704, 4424, 4630, 5530, 6320, 6482, 7408, 8848, 9260, 11060, 12964, 16205, 18520, 22120, 25928, 32410, 36577, 37040, 44240, 51856, 64820, 73154, 129640, 146308, 182885, 256039, 259280, 292616, 365770, 512078, 585232, 731540, 1024156, 1280195, 1463080, 2048312, 2560390, 2926160, 4096624, 5120780, 10241560, 20483120]

約数ペア:

[(1, 20483120), (2, 10241560), (4, 5120780), (5, 4096624), (7, 2926160), (8, 2560390), (10, 2048312), (14, 1463080), (16, 1280195), (20, 1024156), (28, 731540), (35, 585232), (40, 512078), (56, 365770), (70, 292616), (79, 259280), (80, 256039), (112, 182885), (140, 146308), (158, 129640), (280, 73154), (316, 64820), (395, 51856), (463, 44240), (553, 37040), (560, 36577), (632, 32410), (790, 25928), (926, 22120), (1106, 18520), (1264, 16205), (1580, 12964), (1852, 11060), (2212, 9260), (2315, 8848), (2765, 7408), (3160, 6482), (3241, 6320), (3704, 5530), (4424, 4630)]