420553623

素因数分解:

$3^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{21839}}^1$

素因数の和:21987

約数の個数: 24

約数和(自身を含む): 657296640

約数和(自身を除く): 236743017

約数列:

[1, 3, 7, 21, 49, 131, 147, 393, 917, 2751, 6419, 19257, 21839, 65517, 152873, 458619, 1070111, 2860909, 3210333, 8582727, 20026363, 60079089, 140184541, 420553623]

約数ペア:

[(1, 420553623), (3, 140184541), (7, 60079089), (21, 20026363), (49, 8582727), (131, 3210333), (147, 2860909), (393, 1070111), (917, 458619), (2751, 152873), (6419, 65517), (19257, 21839)]