28081209

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{571}}^1$

素因数の和:697

約数の個数: 24

約数和(自身を含む): 41032992

約数和(自身を除く): 12951783

約数列:

[1, 3, 13, 39, 97, 169, 291, 507, 571, 1261, 1713, 3783, 7423, 16393, 22269, 49179, 55387, 96499, 166161, 289497, 720031, 2160093, 9360403, 28081209]

約数ペア:

[(1, 28081209), (3, 9360403), (13, 2160093), (39, 720031), (97, 289497), (169, 166161), (291, 96499), (507, 55387), (571, 49179), (1261, 22269), (1713, 16393), (3783, 7423)]