21203145

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{24799}}^1$

素因数の和:24829

約数の個数: 24

約数和(自身を含む): 38688000

約数和(自身を除く): 17484855

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 24799, 74397, 123995, 223191, 371985, 471181, 1115955, 1413543, 2355905, 4240629, 7067715, 21203145]

約数ペア:

[(1, 21203145), (3, 7067715), (5, 4240629), (9, 2355905), (15, 1413543), (19, 1115955), (45, 471181), (57, 371985), (95, 223191), (171, 123995), (285, 74397), (855, 24799)]