389875840

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{457}}^1$

素因数の和:550

約数の個数: 128

約数和(自身を含む): 986641920

約数和(自身を除く): 596766080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 43, 62, 64, 80, 86, 124, 128, 155, 160, 172, 215, 248, 310, 320, 344, 430, 457, 496, 620, 640, 688, 860, 914, 992, 1240, 1333, 1376, 1720, 1828, 1984, 2285, 2480, 2666, 2752, 3440, 3656, 3968, 4570, 4960, 5332, 5504, 6665, 6880, 7312, 9140, 9920, 10664, 13330, 13760, 14167, 14624, 18280, 19651, 19840, 21328, 26660, 27520, 28334, 29248, 36560, 39302, 42656, 53320, 56668, 58496, 70835, 73120, 78604, 85312, 98255, 106640, 113336, 141670, 146240, 157208, 170624, 196510, 213280, 226672, 283340, 292480, 314416, 393020, 426560, 453344, 566680, 609181, 628832, 786040, 853120, 906688, 1133360, 1218362, 1257664, 1572080, 1813376, 2266720, 2436724, 2515328, 3045905, 3144160, 4533440, 4873448, 6091810, 6288320, 9066880, 9746896, 12183620, 12576640, 19493792, 24367240, 38987584, 48734480, 77975168, 97468960, 194937920, 389875840]

約数ペア:

[(1, 389875840), (2, 194937920), (4, 97468960), (5, 77975168), (8, 48734480), (10, 38987584), (16, 24367240), (20, 19493792), (31, 12576640), (32, 12183620), (40, 9746896), (43, 9066880), (62, 6288320), (64, 6091810), (80, 4873448), (86, 4533440), (124, 3144160), (128, 3045905), (155, 2515328), (160, 2436724), (172, 2266720), (215, 1813376), (248, 1572080), (310, 1257664), (320, 1218362), (344, 1133360), (430, 906688), (457, 853120), (496, 786040), (620, 628832), (640, 609181), (688, 566680), (860, 453344), (914, 426560), (992, 393020), (1240, 314416), (1333, 292480), (1376, 283340), (1720, 226672), (1828, 213280), (1984, 196510), (2285, 170624), (2480, 157208), (2666, 146240), (2752, 141670), (3440, 113336), (3656, 106640), (3968, 98255), (4570, 85312), (4960, 78604), (5332, 73120), (5504, 70835), (6665, 58496), (6880, 56668), (7312, 53320), (9140, 42656), (9920, 39302), (10664, 36560), (13330, 29248), (13760, 28334), (14167, 27520), (14624, 26660), (18280, 21328), (19651, 19840)]