209218520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{2141}}^1$

素因数の和:2508

約数の個数: 64

約数和(自身を含む): 539784000

約数和(自身を除く): 330565480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 349, 698, 1396, 1745, 2141, 2443, 2792, 3490, 4282, 4886, 6980, 8564, 9772, 10705, 12215, 13960, 14987, 17128, 19544, 21410, 24430, 29974, 42820, 48860, 59948, 74935, 85640, 97720, 119896, 149870, 299740, 599480, 747209, 1494418, 2988836, 3736045, 5230463, 5977672, 7472090, 10460926, 14944180, 20921852, 26152315, 29888360, 41843704, 52304630, 104609260, 209218520]

約数ペア:

[(1, 209218520), (2, 104609260), (4, 52304630), (5, 41843704), (7, 29888360), (8, 26152315), (10, 20921852), (14, 14944180), (20, 10460926), (28, 7472090), (35, 5977672), (40, 5230463), (56, 3736045), (70, 2988836), (140, 1494418), (280, 747209), (349, 599480), (698, 299740), (1396, 149870), (1745, 119896), (2141, 97720), (2443, 85640), (2792, 74935), (3490, 59948), (4282, 48860), (4886, 42820), (6980, 29974), (8564, 24430), (9772, 21410), (10705, 19544), (12215, 17128), (13960, 14987)]