81028311

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 136936800

約数和(自身を除く): 55908489

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 109, 147, 273, 327, 389, 637, 763, 1167, 1417, 1911, 2289, 2723, 4251, 5057, 5341, 8169, 9919, 15171, 16023, 19061, 29757, 35399, 42401, 57183, 69433, 106197, 127203, 208299, 247793, 296807, 551213, 743379, 890421, 1653639, 2077649, 3858491, 6232947, 11575473, 27009437, 81028311]

約数ペア:

[(1, 81028311), (3, 27009437), (7, 11575473), (13, 6232947), (21, 3858491), (39, 2077649), (49, 1653639), (91, 890421), (109, 743379), (147, 551213), (273, 296807), (327, 247793), (389, 208299), (637, 127203), (763, 106197), (1167, 69433), (1417, 57183), (1911, 42401), (2289, 35399), (2723, 29757), (4251, 19061), (5057, 16023), (5341, 15171), (8169, 9919)]