20866864

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{827}}^1$

素因数の和:937

約数の個数: 40

約数和(自身を含む): 43122240

約数和(自身を除く): 22255376

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 83, 152, 166, 304, 332, 664, 827, 1328, 1577, 1654, 3154, 3308, 6308, 6616, 12616, 13232, 15713, 25232, 31426, 62852, 68641, 125704, 137282, 251408, 274564, 549128, 1098256, 1304179, 2608358, 5216716, 10433432, 20866864]

約数ペア:

[(1, 20866864), (2, 10433432), (4, 5216716), (8, 2608358), (16, 1304179), (19, 1098256), (38, 549128), (76, 274564), (83, 251408), (152, 137282), (166, 125704), (304, 68641), (332, 62852), (664, 31426), (827, 25232), (1328, 15713), (1577, 13232), (1654, 12616), (3154, 6616), (3308, 6308)]