19675971

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{367}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 34904064

約数和(自身を除く): 15228093

約数列:

[1, 3, 7, 9, 21, 23, 37, 63, 69, 111, 161, 207, 259, 333, 367, 483, 777, 851, 1101, 1449, 2331, 2553, 2569, 3303, 5957, 7659, 7707, 8441, 13579, 17871, 23121, 25323, 40737, 53613, 59087, 75969, 95053, 122211, 177261, 285159, 312317, 531783, 855477, 936951, 2186219, 2810853, 6558657, 19675971]

約数ペア:

[(1, 19675971), (3, 6558657), (7, 2810853), (9, 2186219), (21, 936951), (23, 855477), (37, 531783), (63, 312317), (69, 285159), (111, 177261), (161, 122211), (207, 95053), (259, 75969), (333, 59087), (367, 53613), (483, 40737), (777, 25323), (851, 23121), (1101, 17871), (1449, 13579), (2331, 8441), (2553, 7707), (2569, 7659), (3303, 5957)]