21498897

素因数分解:

$3^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{1229}}^1$

素因数の和:1270

約数の個数: 32

約数和(自身を含む): 35424000

約数和(自身を除く): 13925103

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 343, 357, 833, 1029, 1229, 2499, 3687, 5831, 8603, 17493, 20893, 25809, 60221, 62679, 146251, 180663, 421547, 438753, 1023757, 1264641, 3071271, 7166299, 21498897]

約数ペア:

[(1, 21498897), (3, 7166299), (7, 3071271), (17, 1264641), (21, 1023757), (49, 438753), (51, 421547), (119, 180663), (147, 146251), (343, 62679), (357, 60221), (833, 25809), (1029, 20893), (1229, 17493), (2499, 8603), (3687, 5831)]