205807980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{490019}}^1$

素因数の和:490038

約数の個数: 48

約数和(自身を含む): 658586880

約数和(自身を除く): 452778900

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, 490019, 980038, 1470057, 1960076, 2450095, 2940114, 3430133, 4900190, 5880228, 6860266, 7350285, 9800380, 10290399, 13720532, 14700570, 17150665, 20580798, 29401140, 34301330, 41161596, 51451995, 68602660, 102903990, 205807980]

約数ペア:

[(1, 205807980), (2, 102903990), (3, 68602660), (4, 51451995), (5, 41161596), (6, 34301330), (7, 29401140), (10, 20580798), (12, 17150665), (14, 14700570), (15, 13720532), (20, 10290399), (21, 9800380), (28, 7350285), (30, 6860266), (35, 5880228), (42, 4900190), (60, 3430133), (70, 2940114), (84, 2450095), (105, 1960076), (140, 1470057), (210, 980038), (420, 490019)]