20344160

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2957}}^1$

素因数の和:3015

約数の個数: 48

約数和(自身を含む): 49197456

約数和(自身を除く): 28853296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 2957, 3440, 5914, 6880, 11828, 14785, 23656, 29570, 47312, 59140, 94624, 118280, 127151, 236560, 254302, 473120, 508604, 635755, 1017208, 1271510, 2034416, 2543020, 4068832, 5086040, 10172080, 20344160]

約数ペア:

[(1, 20344160), (2, 10172080), (4, 5086040), (5, 4068832), (8, 2543020), (10, 2034416), (16, 1271510), (20, 1017208), (32, 635755), (40, 508604), (43, 473120), (80, 254302), (86, 236560), (160, 127151), (172, 118280), (215, 94624), (344, 59140), (430, 47312), (688, 29570), (860, 23656), (1376, 14785), (1720, 11828), (2957, 6880), (3440, 5914)]