18090100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{601}}^1$

素因数の和:665

約数の個数: 72

約数和(自身を含む): 45983168

約数和(自身を除く): 27893068

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, 601, 602, 700, 860, 1075, 1202, 1204, 1505, 2150, 2404, 3005, 3010, 4207, 4300, 6010, 6020, 7525, 8414, 12020, 15025, 15050, 16828, 21035, 25843, 30050, 30100, 42070, 51686, 60100, 84140, 103372, 105175, 129215, 180901, 210350, 258430, 361802, 420700, 516860, 646075, 723604, 904505, 1292150, 1809010, 2584300, 3618020, 4522525, 9045050, 18090100]

約数ペア:

[(1, 18090100), (2, 9045050), (4, 4522525), (5, 3618020), (7, 2584300), (10, 1809010), (14, 1292150), (20, 904505), (25, 723604), (28, 646075), (35, 516860), (43, 420700), (50, 361802), (70, 258430), (86, 210350), (100, 180901), (140, 129215), (172, 105175), (175, 103372), (215, 84140), (301, 60100), (350, 51686), (430, 42070), (601, 30100), (602, 30050), (700, 25843), (860, 21035), (1075, 16828), (1202, 15050), (1204, 15025), (1505, 12020), (2150, 8414), (2404, 7525), (3005, 6020), (3010, 6010), (4207, 4300)]