2149840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{349}}^1$

素因数の和:380

約数の個数: 80

約数和(自身を含む): 6249600

約数和(自身を除く): 4099760

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 349, 385, 440, 560, 616, 698, 770, 880, 1232, 1396, 1540, 1745, 2443, 2792, 3080, 3490, 3839, 4886, 5584, 6160, 6980, 7678, 9772, 12215, 13960, 15356, 19195, 19544, 24430, 26873, 27920, 30712, 38390, 39088, 48860, 53746, 61424, 76780, 97720, 107492, 134365, 153560, 195440, 214984, 268730, 307120, 429968, 537460, 1074920, 2149840]

約数ペア:

[(1, 2149840), (2, 1074920), (4, 537460), (5, 429968), (7, 307120), (8, 268730), (10, 214984), (11, 195440), (14, 153560), (16, 134365), (20, 107492), (22, 97720), (28, 76780), (35, 61424), (40, 53746), (44, 48860), (55, 39088), (56, 38390), (70, 30712), (77, 27920), (80, 26873), (88, 24430), (110, 19544), (112, 19195), (140, 15356), (154, 13960), (176, 12215), (220, 9772), (280, 7678), (308, 6980), (349, 6160), (385, 5584), (440, 4886), (560, 3839), (616, 3490), (698, 3080), (770, 2792), (880, 2443), (1232, 1745), (1396, 1540)]