18663764

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 39583488

約数和(自身を除く): 20919724

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 73, 92, 146, 161, 292, 322, 397, 511, 644, 794, 1022, 1588, 1679, 2044, 2779, 3358, 5558, 6716, 9131, 11116, 11753, 18262, 23506, 28981, 36524, 47012, 57962, 63917, 115924, 127834, 202867, 255668, 405734, 666563, 811468, 1333126, 2666252, 4665941, 9331882, 18663764]

約数ペア:

[(1, 18663764), (2, 9331882), (4, 4665941), (7, 2666252), (14, 1333126), (23, 811468), (28, 666563), (46, 405734), (73, 255668), (92, 202867), (146, 127834), (161, 115924), (292, 63917), (322, 57962), (397, 47012), (511, 36524), (644, 28981), (794, 23506), (1022, 18262), (1588, 11753), (1679, 11116), (2044, 9131), (2779, 6716), (3358, 5558)]