20872480

素因数分解:

$2^5\times 5^1\times {\mathrm{191}}^1\times {\mathrm{683}}^1$

素因数の和:889

約数の個数: 48

約数和(自身を含む): 49641984

約数和(自身を除く): 28769504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 191, 382, 683, 764, 955, 1366, 1528, 1910, 2732, 3056, 3415, 3820, 5464, 6112, 6830, 7640, 10928, 13660, 15280, 21856, 27320, 30560, 54640, 109280, 130453, 260906, 521812, 652265, 1043624, 1304530, 2087248, 2609060, 4174496, 5218120, 10436240, 20872480]

約数ペア:

[(1, 20872480), (2, 10436240), (4, 5218120), (5, 4174496), (8, 2609060), (10, 2087248), (16, 1304530), (20, 1043624), (32, 652265), (40, 521812), (80, 260906), (160, 130453), (191, 109280), (382, 54640), (683, 30560), (764, 27320), (955, 21856), (1366, 15280), (1528, 13660), (1910, 10928), (2732, 7640), (3056, 6830), (3415, 6112), (3820, 5464)]