220720318

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{449}}^1$

素因数の和:581

約数の個数: 64

約数和(自身を含む): 425174400

約数和(自身を除く): 204454082

約数列:

[1, 2, 7, 13, 14, 26, 37, 73, 74, 91, 146, 182, 259, 449, 481, 511, 518, 898, 949, 962, 1022, 1898, 2701, 3143, 3367, 5402, 5837, 6286, 6643, 6734, 11674, 13286, 16613, 18907, 32777, 33226, 35113, 37814, 40859, 65554, 70226, 81718, 116291, 215969, 229439, 232582, 245791, 426101, 431938, 458878, 491582, 852202, 1212749, 1511783, 2425498, 2982707, 3023566, 5965414, 8489243, 15765737, 16978486, 31531474, 110360159, 220720318]

約数ペア:

[(1, 220720318), (2, 110360159), (7, 31531474), (13, 16978486), (14, 15765737), (26, 8489243), (37, 5965414), (73, 3023566), (74, 2982707), (91, 2425498), (146, 1511783), (182, 1212749), (259, 852202), (449, 491582), (481, 458878), (511, 431938), (518, 426101), (898, 245791), (949, 232582), (962, 229439), (1022, 215969), (1898, 116291), (2701, 81718), (3143, 70226), (3367, 65554), (5402, 40859), (5837, 37814), (6286, 35113), (6643, 33226), (6734, 32777), (11674, 18907), (13286, 16613)]