21352080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2069}}^1$

素因数の和:2128

約数の個数: 80

約数和(自身を含む): 67763520

約数和(自身を除く): 46411440

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, 2064, 2069, 2580, 3440, 4138, 5160, 6207, 8276, 10320, 10345, 12414, 16552, 20690, 24828, 31035, 33104, 41380, 49656, 62070, 82760, 88967, 99312, 124140, 165520, 177934, 248280, 266901, 355868, 444835, 496560, 533802, 711736, 889670, 1067604, 1334505, 1423472, 1779340, 2135208, 2669010, 3558680, 4270416, 5338020, 7117360, 10676040, 21352080]

約数ペア:

[(1, 21352080), (2, 10676040), (3, 7117360), (4, 5338020), (5, 4270416), (6, 3558680), (8, 2669010), (10, 2135208), (12, 1779340), (15, 1423472), (16, 1334505), (20, 1067604), (24, 889670), (30, 711736), (40, 533802), (43, 496560), (48, 444835), (60, 355868), (80, 266901), (86, 248280), (120, 177934), (129, 165520), (172, 124140), (215, 99312), (240, 88967), (258, 82760), (344, 62070), (430, 49656), (516, 41380), (645, 33104), (688, 31035), (860, 24828), (1032, 20690), (1290, 16552), (1720, 12414), (2064, 10345), (2069, 10320), (2580, 8276), (3440, 6207), (4138, 5160)]