21319840

素因数分解:

$2^5\times 5^1\times {\mathrm{227}}^1\times {\mathrm{587}}^1$

素因数の和:829

約数の個数: 48

約数和(自身を含む): 50676192

約数和(自身を除く): 29356352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 227, 454, 587, 908, 1135, 1174, 1816, 2270, 2348, 2935, 3632, 4540, 4696, 5870, 7264, 9080, 9392, 11740, 18160, 18784, 23480, 36320, 46960, 93920, 133249, 266498, 532996, 666245, 1065992, 1332490, 2131984, 2664980, 4263968, 5329960, 10659920, 21319840]

約数ペア:

[(1, 21319840), (2, 10659920), (4, 5329960), (5, 4263968), (8, 2664980), (10, 2131984), (16, 1332490), (20, 1065992), (32, 666245), (40, 532996), (80, 266498), (160, 133249), (227, 93920), (454, 46960), (587, 36320), (908, 23480), (1135, 18784), (1174, 18160), (1816, 11740), (2270, 9392), (2348, 9080), (2935, 7264), (3632, 5870), (4540, 4696)]