20673840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:259

約数の個数: 160

約数和(自身を含む): 71995392

約数和(自身を除く): 51321552

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 41, 44, 48, 55, 60, 66, 80, 82, 88, 110, 120, 123, 132, 164, 165, 176, 191, 205, 220, 240, 246, 264, 328, 330, 382, 410, 440, 451, 492, 528, 573, 615, 656, 660, 764, 820, 880, 902, 955, 984, 1146, 1230, 1320, 1353, 1528, 1640, 1804, 1910, 1968, 2101, 2255, 2292, 2460, 2640, 2706, 2865, 3056, 3280, 3608, 3820, 4202, 4510, 4584, 4920, 5412, 5730, 6303, 6765, 7216, 7640, 7831, 8404, 9020, 9168, 9840, 10505, 10824, 11460, 12606, 13530, 15280, 15662, 16808, 18040, 21010, 21648, 22920, 23493, 25212, 27060, 31324, 31515, 33616, 36080, 39155, 42020, 45840, 46986, 50424, 54120, 62648, 63030, 78310, 84040, 86141, 93972, 100848, 108240, 117465, 125296, 126060, 156620, 168080, 172282, 187944, 234930, 252120, 258423, 313240, 344564, 375888, 430705, 469860, 504240, 516846, 626480, 689128, 861410, 939720, 1033692, 1292115, 1378256, 1722820, 1879440, 2067384, 2584230, 3445640, 4134768, 5168460, 6891280, 10336920, 20673840]

約数ペア:

[(1, 20673840), (2, 10336920), (3, 6891280), (4, 5168460), (5, 4134768), (6, 3445640), (8, 2584230), (10, 2067384), (11, 1879440), (12, 1722820), (15, 1378256), (16, 1292115), (20, 1033692), (22, 939720), (24, 861410), (30, 689128), (33, 626480), (40, 516846), (41, 504240), (44, 469860), (48, 430705), (55, 375888), (60, 344564), (66, 313240), (80, 258423), (82, 252120), (88, 234930), (110, 187944), (120, 172282), (123, 168080), (132, 156620), (164, 126060), (165, 125296), (176, 117465), (191, 108240), (205, 100848), (220, 93972), (240, 86141), (246, 84040), (264, 78310), (328, 63030), (330, 62648), (382, 54120), (410, 50424), (440, 46986), (451, 45840), (492, 42020), (528, 39155), (573, 36080), (615, 33616), (656, 31515), (660, 31324), (764, 27060), (820, 25212), (880, 23493), (902, 22920), (955, 21648), (984, 21010), (1146, 18040), (1230, 16808), (1320, 15662), (1353, 15280), (1528, 13530), (1640, 12606), (1804, 11460), (1910, 10824), (1968, 10505), (2101, 9840), (2255, 9168), (2292, 9020), (2460, 8404), (2640, 7831), (2706, 7640), (2865, 7216), (3056, 6765), (3280, 6303), (3608, 5730), (3820, 5412), (4202, 4920), (4510, 4584)]