21213200

素因数分解:

$2^4\times 5^2\times {\mathrm{181}}^1\times {\mathrm{293}}^1$

素因数の和:492

約数の個数: 60

約数和(自身を含む): 51421188

約数和(自身を除く): 30207988

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 181, 200, 293, 362, 400, 586, 724, 905, 1172, 1448, 1465, 1810, 2344, 2896, 2930, 3620, 4525, 4688, 5860, 7240, 7325, 9050, 11720, 14480, 14650, 18100, 23440, 29300, 36200, 53033, 58600, 72400, 106066, 117200, 212132, 265165, 424264, 530330, 848528, 1060660, 1325825, 2121320, 2651650, 4242640, 5303300, 10606600, 21213200]

約数ペア:

[(1, 21213200), (2, 10606600), (4, 5303300), (5, 4242640), (8, 2651650), (10, 2121320), (16, 1325825), (20, 1060660), (25, 848528), (40, 530330), (50, 424264), (80, 265165), (100, 212132), (181, 117200), (200, 106066), (293, 72400), (362, 58600), (400, 53033), (586, 36200), (724, 29300), (905, 23440), (1172, 18100), (1448, 14650), (1465, 14480), (1810, 11720), (2344, 9050), (2896, 7325), (2930, 7240), (3620, 5860), (4525, 4688)]