28378155

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{541}}^1$

素因数の和:831

約数の個数: 32

約数和(自身を含む): 49170240

約数和(自身を除く): 20792085

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 269, 541, 807, 1345, 1623, 2705, 3497, 4035, 7033, 8115, 10491, 17485, 21099, 35165, 52455, 105495, 145529, 436587, 727645, 1891877, 2182935, 5675631, 9459385, 28378155]

約数ペア:

[(1, 28378155), (3, 9459385), (5, 5675631), (13, 2182935), (15, 1891877), (39, 727645), (65, 436587), (195, 145529), (269, 105495), (541, 52455), (807, 35165), (1345, 21099), (1623, 17485), (2705, 10491), (3497, 8115), (4035, 7033)]