30000040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{349}}^1$

素因数の和:674

約数の個数: 64

約数和(自身を含む): 77616000

約数和(自身を除く): 47615960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 307, 349, 614, 698, 1228, 1396, 1535, 1745, 2149, 2443, 2456, 2792, 3070, 3490, 4298, 4886, 6140, 6980, 8596, 9772, 10745, 12215, 12280, 13960, 17192, 19544, 21490, 24430, 42980, 48860, 85960, 97720, 107143, 214286, 428572, 535715, 750001, 857144, 1071430, 1500002, 2142860, 3000004, 3750005, 4285720, 6000008, 7500010, 15000020, 30000040]

約数ペア:

[(1, 30000040), (2, 15000020), (4, 7500010), (5, 6000008), (7, 4285720), (8, 3750005), (10, 3000004), (14, 2142860), (20, 1500002), (28, 1071430), (35, 857144), (40, 750001), (56, 535715), (70, 428572), (140, 214286), (280, 107143), (307, 97720), (349, 85960), (614, 48860), (698, 42980), (1228, 24430), (1396, 21490), (1535, 19544), (1745, 17192), (2149, 13960), (2443, 12280), (2456, 12215), (2792, 10745), (3070, 9772), (3490, 8596), (4298, 6980), (4886, 6140)]