19870864

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{1151}}^1$

素因数の和:1255

約数の個数: 40

約数和(自身を含む): 41997312

約数和(自身を除く): 22126448

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 83, 104, 166, 208, 332, 664, 1079, 1151, 1328, 2158, 2302, 4316, 4604, 8632, 9208, 14963, 17264, 18416, 29926, 59852, 95533, 119704, 191066, 239408, 382132, 764264, 1241929, 1528528, 2483858, 4967716, 9935432, 19870864]

約数ペア:

[(1, 19870864), (2, 9935432), (4, 4967716), (8, 2483858), (13, 1528528), (16, 1241929), (26, 764264), (52, 382132), (83, 239408), (104, 191066), (166, 119704), (208, 95533), (332, 59852), (664, 29926), (1079, 18416), (1151, 17264), (1328, 14963), (2158, 9208), (2302, 8632), (4316, 4604)]