20555028

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{263}}^1$

素因数の和:453

約数の個数: 72

約数和(自身を含む): 56504448

約数和(自身を除く): 35949420

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 167, 234, 263, 334, 468, 501, 526, 668, 789, 1002, 1052, 1503, 1578, 2004, 2171, 2367, 3006, 3156, 3419, 4342, 4734, 6012, 6513, 6838, 8684, 9468, 10257, 13026, 13676, 19539, 20514, 26052, 30771, 39078, 41028, 43921, 61542, 78156, 87842, 123084, 131763, 175684, 263526, 395289, 527052, 570973, 790578, 1141946, 1581156, 1712919, 2283892, 3425838, 5138757, 6851676, 10277514, 20555028]

約数ペア:

[(1, 20555028), (2, 10277514), (3, 6851676), (4, 5138757), (6, 3425838), (9, 2283892), (12, 1712919), (13, 1581156), (18, 1141946), (26, 790578), (36, 570973), (39, 527052), (52, 395289), (78, 263526), (117, 175684), (156, 131763), (167, 123084), (234, 87842), (263, 78156), (334, 61542), (468, 43921), (501, 41028), (526, 39078), (668, 30771), (789, 26052), (1002, 20514), (1052, 19539), (1503, 13676), (1578, 13026), (2004, 10257), (2171, 9468), (2367, 8684), (3006, 6838), (3156, 6513), (3419, 6012), (4342, 4734)]