20797439740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{647}}^1\times {\mathrm{20873}}^1$

素因数の和:21547

約数の個数: 96

約数和(自身を含む): 54538251264

約数和(自身を除く): 33740811524

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 647, 770, 1294, 1540, 2588, 3235, 4529, 6470, 7117, 9058, 12940, 14234, 18116, 20873, 22645, 28468, 35585, 41746, 45290, 49819, 71170, 83492, 90580, 99638, 104365, 142340, 146111, 199276, 208730, 229603, 249095, 292222, 417460, 459206, 498190, 584444, 730555, 918412, 996380, 1148015, 1461110, 1607221, 2296030, 2922220, 3214442, 4592060, 6428884, 8036105, 13504831, 16072210, 27009662, 32144420, 54019324, 67524155, 94533817, 135048310, 148553141, 189067634, 270096620, 297106282, 378135268, 472669085, 594212564, 742765705, 945338170, 1039871987, 1485531410, 1890676340, 2079743974, 2971062820, 4159487948, 5199359935, 10398719870, 20797439740]

約数ペア:

[(1, 20797439740), (2, 10398719870), (4, 5199359935), (5, 4159487948), (7, 2971062820), (10, 2079743974), (11, 1890676340), (14, 1485531410), (20, 1039871987), (22, 945338170), (28, 742765705), (35, 594212564), (44, 472669085), (55, 378135268), (70, 297106282), (77, 270096620), (110, 189067634), (140, 148553141), (154, 135048310), (220, 94533817), (308, 67524155), (385, 54019324), (647, 32144420), (770, 27009662), (1294, 16072210), (1540, 13504831), (2588, 8036105), (3235, 6428884), (4529, 4592060), (6470, 3214442), (7117, 2922220), (9058, 2296030), (12940, 1607221), (14234, 1461110), (18116, 1148015), (20873, 996380), (22645, 918412), (28468, 730555), (35585, 584444), (41746, 498190), (45290, 459206), (49819, 417460), (71170, 292222), (83492, 249095), (90580, 229603), (99638, 208730), (104365, 199276), (142340, 146111)]