21036928

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 46609920

約数和(自身を除く): 25572992

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 67, 88, 128, 134, 176, 223, 268, 352, 446, 536, 704, 737, 892, 1072, 1408, 1474, 1784, 2144, 2453, 2948, 3568, 4288, 4906, 5896, 7136, 8576, 9812, 11792, 14272, 14941, 19624, 23584, 28544, 29882, 39248, 47168, 59764, 78496, 94336, 119528, 156992, 164351, 239056, 313984, 328702, 478112, 657404, 956224, 1314808, 1912448, 2629616, 5259232, 10518464, 21036928]

約数ペア:

[(1, 21036928), (2, 10518464), (4, 5259232), (8, 2629616), (11, 1912448), (16, 1314808), (22, 956224), (32, 657404), (44, 478112), (64, 328702), (67, 313984), (88, 239056), (128, 164351), (134, 156992), (176, 119528), (223, 94336), (268, 78496), (352, 59764), (446, 47168), (536, 39248), (704, 29882), (737, 28544), (892, 23584), (1072, 19624), (1408, 14941), (1474, 14272), (1784, 11792), (2144, 9812), (2453, 8576), (2948, 7136), (3568, 5896), (4288, 4906)]