28706223

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1481}}^1$

素因数の和:1575

約数の個数: 32

約数和(自身を含む): 47803392

約数和(自身を除く): 19097169

約数列:

[1, 3, 7, 13, 21, 39, 71, 91, 213, 273, 497, 923, 1481, 1491, 2769, 4443, 6461, 10367, 19253, 19383, 31101, 57759, 105151, 134771, 315453, 404313, 736057, 1366963, 2208171, 4100889, 9568741, 28706223]

約数ペア:

[(1, 28706223), (3, 9568741), (7, 4100889), (13, 2208171), (21, 1366963), (39, 736057), (71, 404313), (91, 315453), (213, 134771), (273, 105151), (497, 57759), (923, 31101), (1481, 19383), (1491, 19253), (2769, 10367), (4443, 6461)]