1980012400

素因数分解:

$2^4\times 5^2\times {\mathrm{43}}^1\times {\mathrm{115117}}^1$

素因数の和:115178

約数の個数: 60

約数和(自身を含む): 4867649512

約数和(自身を除く): 2887637112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 43, 50, 80, 86, 100, 172, 200, 215, 344, 400, 430, 688, 860, 1075, 1720, 2150, 3440, 4300, 8600, 17200, 115117, 230234, 460468, 575585, 920936, 1151170, 1841872, 2302340, 2877925, 4604680, 4950031, 5755850, 9209360, 9900062, 11511700, 19800124, 23023400, 24750155, 39600248, 46046800, 49500310, 79200496, 99000620, 123750775, 198001240, 247501550, 396002480, 495003100, 990006200, 1980012400]

約数ペア:

[(1, 1980012400), (2, 990006200), (4, 495003100), (5, 396002480), (8, 247501550), (10, 198001240), (16, 123750775), (20, 99000620), (25, 79200496), (40, 49500310), (43, 46046800), (50, 39600248), (80, 24750155), (86, 23023400), (100, 19800124), (172, 11511700), (200, 9900062), (215, 9209360), (344, 5755850), (400, 4950031), (430, 4604680), (688, 2877925), (860, 2302340), (1075, 1841872), (1720, 1151170), (2150, 920936), (3440, 575585), (4300, 460468), (8600, 230234), (17200, 115117)]