20870050

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:643

約数の個数: 48

約数和(自身を含む): 42131232

約数和(自身を除く): 21261182

約数列:

[1, 2, 5, 10, 17, 25, 34, 43, 50, 85, 86, 170, 215, 425, 430, 571, 731, 850, 1075, 1142, 1462, 2150, 2855, 3655, 5710, 7310, 9707, 14275, 18275, 19414, 24553, 28550, 36550, 48535, 49106, 97070, 122765, 242675, 245530, 417401, 485350, 613825, 834802, 1227650, 2087005, 4174010, 10435025, 20870050]

約数ペア:

[(1, 20870050), (2, 10435025), (5, 4174010), (10, 2087005), (17, 1227650), (25, 834802), (34, 613825), (43, 485350), (50, 417401), (85, 245530), (86, 242675), (170, 122765), (215, 97070), (425, 49106), (430, 48535), (571, 36550), (731, 28550), (850, 24553), (1075, 19414), (1142, 18275), (1462, 14275), (2150, 9707), (2855, 7310), (3655, 5710)]