18785900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{571}}^1$

素因数の和:639

約数の個数: 72

約数和(自身を含む): 47663616

約数和(自身を除く): 28877716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 47, 50, 70, 94, 100, 140, 175, 188, 235, 329, 350, 470, 571, 658, 700, 940, 1142, 1175, 1316, 1645, 2284, 2350, 2855, 3290, 3997, 4700, 5710, 6580, 7994, 8225, 11420, 14275, 15988, 16450, 19985, 26837, 28550, 32900, 39970, 53674, 57100, 79940, 99925, 107348, 134185, 187859, 199850, 268370, 375718, 399700, 536740, 670925, 751436, 939295, 1341850, 1878590, 2683700, 3757180, 4696475, 9392950, 18785900]

約数ペア:

[(1, 18785900), (2, 9392950), (4, 4696475), (5, 3757180), (7, 2683700), (10, 1878590), (14, 1341850), (20, 939295), (25, 751436), (28, 670925), (35, 536740), (47, 399700), (50, 375718), (70, 268370), (94, 199850), (100, 187859), (140, 134185), (175, 107348), (188, 99925), (235, 79940), (329, 57100), (350, 53674), (470, 39970), (571, 32900), (658, 28550), (700, 26837), (940, 19985), (1142, 16450), (1175, 15988), (1316, 14275), (1645, 11420), (2284, 8225), (2350, 7994), (2855, 6580), (3290, 5710), (3997, 4700)]