28867139

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 37324800

約数和(自身を除く): 8457661

約数列:

[1, 7, 17, 23, 53, 119, 161, 199, 371, 391, 901, 1219, 1393, 2737, 3383, 4577, 6307, 8533, 10547, 20723, 23681, 32039, 73829, 77809, 145061, 179299, 242581, 544663, 1255093, 1698067, 4123877, 28867139]

約数ペア:

[(1, 28867139), (7, 4123877), (17, 1698067), (23, 1255093), (53, 544663), (119, 242581), (161, 179299), (199, 145061), (371, 77809), (391, 73829), (901, 32039), (1219, 23681), (1393, 20723), (2737, 10547), (3383, 8533), (4577, 6307)]