20805586788

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{1663}}^1\times {\mathrm{21277}}^1$

素因数の和:22961

約数の個数: 72

約数和(自身を含む): 56508920832

約数和(自身を除く): 35703334044

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 196, 294, 588, 1663, 3326, 4989, 6652, 9978, 11641, 19956, 21277, 23282, 34923, 42554, 46564, 63831, 69846, 81487, 85108, 127662, 139692, 148939, 162974, 244461, 255324, 297878, 325948, 446817, 488922, 595756, 893634, 977844, 1042573, 1787268, 2085146, 3127719, 4170292, 6255438, 12510876, 35383651, 70767302, 106150953, 141534604, 212301906, 247685557, 424603812, 495371114, 743056671, 990742228, 1486113342, 1733798899, 2972226684, 3467597798, 5201396697, 6935195596, 10402793394, 20805586788]

約数ペア:

[(1, 20805586788), (2, 10402793394), (3, 6935195596), (4, 5201396697), (6, 3467597798), (7, 2972226684), (12, 1733798899), (14, 1486113342), (21, 990742228), (28, 743056671), (42, 495371114), (49, 424603812), (84, 247685557), (98, 212301906), (147, 141534604), (196, 106150953), (294, 70767302), (588, 35383651), (1663, 12510876), (3326, 6255438), (4989, 4170292), (6652, 3127719), (9978, 2085146), (11641, 1787268), (19956, 1042573), (21277, 977844), (23282, 893634), (34923, 595756), (42554, 488922), (46564, 446817), (63831, 325948), (69846, 297878), (81487, 255324), (85108, 244461), (127662, 162974), (139692, 148939)]