18893456

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{347}}^1$

素因数の和:479

約数の個数: 40

約数和(自身を含む): 38060064

約数和(自身を除く): 19166608

約数列:

[1, 2, 4, 8, 16, 41, 82, 83, 164, 166, 328, 332, 347, 656, 664, 694, 1328, 1388, 2776, 3403, 5552, 6806, 13612, 14227, 27224, 28454, 28801, 54448, 56908, 57602, 113816, 115204, 227632, 230408, 460816, 1180841, 2361682, 4723364, 9446728, 18893456]

約数ペア:

[(1, 18893456), (2, 9446728), (4, 4723364), (8, 2361682), (16, 1180841), (41, 460816), (82, 230408), (83, 227632), (164, 115204), (166, 113816), (328, 57602), (332, 56908), (347, 54448), (656, 28801), (664, 28454), (694, 27224), (1328, 14227), (1388, 13612), (2776, 6806), (3403, 5552)]