20558300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{683}}^1$

素因数の和:747

約数の個数: 72

約数和(自身を含む): 52246656

約数和(自身を除く): 31688356

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 43, 50, 70, 86, 100, 140, 172, 175, 215, 301, 350, 430, 602, 683, 700, 860, 1075, 1204, 1366, 1505, 2150, 2732, 3010, 3415, 4300, 4781, 6020, 6830, 7525, 9562, 13660, 15050, 17075, 19124, 23905, 29369, 30100, 34150, 47810, 58738, 68300, 95620, 117476, 119525, 146845, 205583, 239050, 293690, 411166, 478100, 587380, 734225, 822332, 1027915, 1468450, 2055830, 2936900, 4111660, 5139575, 10279150, 20558300]

約数ペア:

[(1, 20558300), (2, 10279150), (4, 5139575), (5, 4111660), (7, 2936900), (10, 2055830), (14, 1468450), (20, 1027915), (25, 822332), (28, 734225), (35, 587380), (43, 478100), (50, 411166), (70, 293690), (86, 239050), (100, 205583), (140, 146845), (172, 119525), (175, 117476), (215, 95620), (301, 68300), (350, 58738), (430, 47810), (602, 34150), (683, 30100), (700, 29369), (860, 23905), (1075, 19124), (1204, 17075), (1366, 15050), (1505, 13660), (2150, 9562), (2732, 7525), (3010, 6830), (3415, 6020), (4300, 4781)]