20777372

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{419}}^1$

素因数の和:471

約数の個数: 72

約数和(自身を含む): 48263040

約数和(自身を除く): 27485668

約数列:

[1, 2, 4, 7, 11, 14, 22, 23, 28, 44, 46, 49, 77, 92, 98, 154, 161, 196, 253, 308, 322, 419, 506, 539, 644, 838, 1012, 1078, 1127, 1676, 1771, 2156, 2254, 2933, 3542, 4508, 4609, 5866, 7084, 9218, 9637, 11732, 12397, 18436, 19274, 20531, 24794, 32263, 38548, 41062, 49588, 64526, 67459, 82124, 106007, 129052, 134918, 212014, 225841, 269836, 424028, 451682, 472213, 742049, 903364, 944426, 1484098, 1888852, 2968196, 5194343, 10388686, 20777372]

約数ペア:

[(1, 20777372), (2, 10388686), (4, 5194343), (7, 2968196), (11, 1888852), (14, 1484098), (22, 944426), (23, 903364), (28, 742049), (44, 472213), (46, 451682), (49, 424028), (77, 269836), (92, 225841), (98, 212014), (154, 134918), (161, 129052), (196, 106007), (253, 82124), (308, 67459), (322, 64526), (419, 49588), (506, 41062), (539, 38548), (644, 32263), (838, 24794), (1012, 20531), (1078, 19274), (1127, 18436), (1676, 12397), (1771, 11732), (2156, 9637), (2254, 9218), (2933, 7084), (3542, 5866), (4508, 4609)]