20982064

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{227}}^1$

素因数の和:397

約数の個数: 40

約数和(自身を含む): 41983920

約数和(自身を除く): 21001856

約数列:

[1, 2, 4, 8, 16, 53, 106, 109, 212, 218, 227, 424, 436, 454, 848, 872, 908, 1744, 1816, 3632, 5777, 11554, 12031, 23108, 24062, 24743, 46216, 48124, 49486, 92432, 96248, 98972, 192496, 197944, 395888, 1311379, 2622758, 5245516, 10491032, 20982064]

約数ペア:

[(1, 20982064), (2, 10491032), (4, 5245516), (8, 2622758), (16, 1311379), (53, 395888), (106, 197944), (109, 192496), (212, 98972), (218, 96248), (227, 92432), (424, 49486), (436, 48124), (454, 46216), (848, 24743), (872, 24062), (908, 23108), (1744, 12031), (1816, 11554), (3632, 5777)]