20916872

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{571}}^1$

素因数の和:837

約数の個数: 32

約数和(自身を含む): 41527200

約数和(自身を除く): 20610328

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 241, 482, 571, 964, 1142, 1928, 2284, 4568, 4579, 9158, 10849, 18316, 21698, 36632, 43396, 86792, 137611, 275222, 550444, 1100888, 2614609, 5229218, 10458436, 20916872]

約数ペア:

[(1, 20916872), (2, 10458436), (4, 5229218), (8, 2614609), (19, 1100888), (38, 550444), (76, 275222), (152, 137611), (241, 86792), (482, 43396), (571, 36632), (964, 21698), (1142, 18316), (1928, 10849), (2284, 9158), (4568, 4579)]