20815440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2017}}^1$

素因数の和:2076

約数の個数: 80

約数和(自身を含む): 66061248

約数和(自身を除く): 45245808

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 43, 48, 60, 80, 86, 120, 129, 172, 215, 240, 258, 344, 430, 516, 645, 688, 860, 1032, 1290, 1720, 2017, 2064, 2580, 3440, 4034, 5160, 6051, 8068, 10085, 10320, 12102, 16136, 20170, 24204, 30255, 32272, 40340, 48408, 60510, 80680, 86731, 96816, 121020, 161360, 173462, 242040, 260193, 346924, 433655, 484080, 520386, 693848, 867310, 1040772, 1300965, 1387696, 1734620, 2081544, 2601930, 3469240, 4163088, 5203860, 6938480, 10407720, 20815440]

約数ペア:

[(1, 20815440), (2, 10407720), (3, 6938480), (4, 5203860), (5, 4163088), (6, 3469240), (8, 2601930), (10, 2081544), (12, 1734620), (15, 1387696), (16, 1300965), (20, 1040772), (24, 867310), (30, 693848), (40, 520386), (43, 484080), (48, 433655), (60, 346924), (80, 260193), (86, 242040), (120, 173462), (129, 161360), (172, 121020), (215, 96816), (240, 86731), (258, 80680), (344, 60510), (430, 48408), (516, 40340), (645, 32272), (688, 30255), (860, 24204), (1032, 20170), (1290, 16136), (1720, 12102), (2017, 10320), (2064, 10085), (2580, 8068), (3440, 6051), (4034, 5160)]