21352513

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 27659520

約数和(自身を除く): 6307007

約数列:

[1, 7, 13, 41, 59, 91, 97, 287, 413, 533, 679, 767, 1261, 2419, 3731, 3977, 5369, 5723, 8827, 16933, 27839, 31447, 40061, 51701, 74399, 220129, 234643, 361907, 520793, 1642501, 3050359, 21352513]

約数ペア:

[(1, 21352513), (7, 3050359), (13, 1642501), (41, 520793), (59, 361907), (91, 234643), (97, 220129), (287, 74399), (413, 51701), (533, 40061), (679, 31447), (767, 27839), (1261, 16933), (2419, 8827), (3731, 5723), (3977, 5369)]