204862980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{487769}}^1$

素因数の和:487788

約数の個数: 48

約数和(自身を含む): 655562880

約数和(自身を除く): 450699900

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, 487769, 975538, 1463307, 1951076, 2438845, 2926614, 3414383, 4877690, 5853228, 6828766, 7316535, 9755380, 10243149, 13657532, 14633070, 17071915, 20486298, 29266140, 34143830, 40972596, 51215745, 68287660, 102431490, 204862980]

約数ペア:

[(1, 204862980), (2, 102431490), (3, 68287660), (4, 51215745), (5, 40972596), (6, 34143830), (7, 29266140), (10, 20486298), (12, 17071915), (14, 14633070), (15, 13657532), (20, 10243149), (21, 9755380), (28, 7316535), (30, 6828766), (35, 5853228), (42, 4877690), (60, 3414383), (70, 2926614), (84, 2438845), (105, 1951076), (140, 1463307), (210, 975538), (420, 487769)]