208244820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{495821}}^1$

素因数の和:495840

約数の個数: 48

約数和(自身を含む): 666384768

約数和(自身を除く): 458139948

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 495821, 991642, 1487463, 1983284, 2479105, 2974926, 3470747, 4958210, 5949852, 6941494, 7437315, 9916420, 10412241, 13882988, 14874630, 17353735, 20824482, 29749260, 34707470, 41648964, 52061205, 69414940, 104122410, 208244820]

約数ペア:

[(1, 208244820), (2, 104122410), (3, 69414940), (4, 52061205), (5, 41648964), (6, 34707470), (7, 29749260), (10, 20824482), (12, 17353735), (14, 14874630), (15, 13882988), (20, 10412241), (21, 9916420), (28, 7437315), (30, 6941494), (35, 5949852), (42, 4958210), (60, 3470747), (70, 2974926), (84, 2479105), (105, 1983284), (140, 1487463), (210, 991642), (420, 495821)]