309318520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{409}}^1$

素因数の和:537

約数の個数: 128

約数和(自身を含む): 830102400

約数和(自身を除く): 520783880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 73, 74, 140, 146, 148, 185, 259, 280, 292, 296, 365, 370, 409, 511, 518, 584, 730, 740, 818, 1022, 1036, 1295, 1460, 1480, 1636, 2044, 2045, 2072, 2555, 2590, 2701, 2863, 2920, 3272, 4088, 4090, 5110, 5180, 5402, 5726, 8180, 10220, 10360, 10804, 11452, 13505, 14315, 15133, 16360, 18907, 20440, 21608, 22904, 27010, 28630, 29857, 30266, 37814, 54020, 57260, 59714, 60532, 75628, 75665, 94535, 105931, 108040, 114520, 119428, 121064, 149285, 151256, 151330, 189070, 208999, 211862, 238856, 298570, 302660, 378140, 417998, 423724, 529655, 597140, 605320, 756280, 835996, 847448, 1044995, 1059310, 1104709, 1194280, 1671992, 2089990, 2118620, 2209418, 4179980, 4237240, 4418836, 5523545, 7732963, 8359960, 8837672, 11047090, 15465926, 22094180, 30931852, 38664815, 44188360, 61863704, 77329630, 154659260, 309318520]

約数ペア:

[(1, 309318520), (2, 154659260), (4, 77329630), (5, 61863704), (7, 44188360), (8, 38664815), (10, 30931852), (14, 22094180), (20, 15465926), (28, 11047090), (35, 8837672), (37, 8359960), (40, 7732963), (56, 5523545), (70, 4418836), (73, 4237240), (74, 4179980), (140, 2209418), (146, 2118620), (148, 2089990), (185, 1671992), (259, 1194280), (280, 1104709), (292, 1059310), (296, 1044995), (365, 847448), (370, 835996), (409, 756280), (511, 605320), (518, 597140), (584, 529655), (730, 423724), (740, 417998), (818, 378140), (1022, 302660), (1036, 298570), (1295, 238856), (1460, 211862), (1480, 208999), (1636, 189070), (2044, 151330), (2045, 151256), (2072, 149285), (2555, 121064), (2590, 119428), (2701, 114520), (2863, 108040), (2920, 105931), (3272, 94535), (4088, 75665), (4090, 75628), (5110, 60532), (5180, 59714), (5402, 57260), (5726, 54020), (8180, 37814), (10220, 30266), (10360, 29857), (10804, 28630), (11452, 27010), (13505, 22904), (14315, 21608), (15133, 20440), (16360, 18907)]