21702639

素因数分解:

$3^1\times 7^4\times {\mathrm{23}}^1\times {\mathrm{131}}^1$

素因数の和:185

約数の個数: 40

約数和(自身を含む): 35494272

約数和(自身を除く): 13791633

約数列:

[1, 3, 7, 21, 23, 49, 69, 131, 147, 161, 343, 393, 483, 917, 1029, 1127, 2401, 2751, 3013, 3381, 6419, 7203, 7889, 9039, 19257, 21091, 23667, 44933, 55223, 63273, 134799, 147637, 165669, 314531, 442911, 943593, 1033459, 3100377, 7234213, 21702639]

約数ペア:

[(1, 21702639), (3, 7234213), (7, 3100377), (21, 1033459), (23, 943593), (49, 442911), (69, 314531), (131, 165669), (147, 147637), (161, 134799), (343, 63273), (393, 55223), (483, 44933), (917, 23667), (1029, 21091), (1127, 19257), (2401, 9039), (2751, 7889), (3013, 7203), (3381, 6419)]