31920917

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:581

約数の個数: 24

約数和(自身を含む): 40081920

約数和(自身を除く): 8161003

約数列:

[1, 7, 17, 31, 119, 217, 289, 509, 527, 2023, 3563, 3689, 8653, 8959, 15779, 60571, 62713, 110453, 147101, 268243, 1029707, 1877701, 4560131, 31920917]

約数ペア:

[(1, 31920917), (7, 4560131), (17, 1877701), (31, 1029707), (119, 268243), (217, 147101), (289, 110453), (509, 62713), (527, 60571), (2023, 15779), (3563, 8959), (3689, 8653)]