20931495

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{359}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 37946880

約数和(自身を除く): 17015385

約数列:

[1, 3, 5, 13, 15, 23, 39, 65, 69, 115, 169, 195, 299, 345, 359, 507, 845, 897, 1077, 1495, 1795, 2535, 3887, 4485, 4667, 5385, 8257, 11661, 14001, 19435, 23335, 24771, 41285, 58305, 60671, 70005, 107341, 123855, 182013, 303355, 322023, 536705, 910065, 1395433, 1610115, 4186299, 6977165, 20931495]

約数ペア:

[(1, 20931495), (3, 6977165), (5, 4186299), (13, 1610115), (15, 1395433), (23, 910065), (39, 536705), (65, 322023), (69, 303355), (115, 182013), (169, 123855), (195, 107341), (299, 70005), (345, 60671), (359, 58305), (507, 41285), (845, 24771), (897, 23335), (1077, 19435), (1495, 14001), (1795, 11661), (2535, 8257), (3887, 5385), (4485, 4667)]