21347325

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{5581}}^1$

素因数の和:5614

約数の個数: 36

約数和(自身を含む): 40491828

約数和(自身を除く): 19144503

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 425, 765, 1275, 3825, 5581, 16743, 27905, 50229, 83715, 94877, 139525, 251145, 284631, 418575, 474385, 853893, 1255725, 1423155, 2371925, 4269465, 7115775, 21347325]

約数ペア:

[(1, 21347325), (3, 7115775), (5, 4269465), (9, 2371925), (15, 1423155), (17, 1255725), (25, 853893), (45, 474385), (51, 418575), (75, 284631), (85, 251145), (153, 139525), (225, 94877), (255, 83715), (425, 50229), (765, 27905), (1275, 16743), (3825, 5581)]