21840928

素因数分解:

$2^5\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1$

素因数の和:305

約数の個数: 48

約数和(自身を含む): 44622144

約数和(自身を除く): 22781216

約数列:

[1, 2, 4, 8, 16, 32, 61, 67, 122, 134, 167, 244, 268, 334, 488, 536, 668, 976, 1072, 1336, 1952, 2144, 2672, 4087, 5344, 8174, 10187, 11189, 16348, 20374, 22378, 32696, 40748, 44756, 65392, 81496, 89512, 130784, 162992, 179024, 325984, 358048, 682529, 1365058, 2730116, 5460232, 10920464, 21840928]

約数ペア:

[(1, 21840928), (2, 10920464), (4, 5460232), (8, 2730116), (16, 1365058), (32, 682529), (61, 358048), (67, 325984), (122, 179024), (134, 162992), (167, 130784), (244, 89512), (268, 81496), (334, 65392), (488, 44756), (536, 40748), (668, 32696), (976, 22378), (1072, 20374), (1336, 16348), (1952, 11189), (2144, 10187), (2672, 8174), (4087, 5344)]