221518780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{3037}}^1$

素因数の和:3574

約数の個数: 48

約数和(自身を含む): 532840896

約数和(自身を除く): 311322116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 521, 1042, 2084, 2605, 3037, 3647, 5210, 6074, 7294, 10420, 12148, 14588, 15185, 18235, 21259, 30370, 36470, 42518, 60740, 72940, 85036, 106295, 212590, 425180, 1582277, 3164554, 6329108, 7911385, 11075939, 15822770, 22151878, 31645540, 44303756, 55379695, 110759390, 221518780]

約数ペア:

[(1, 221518780), (2, 110759390), (4, 55379695), (5, 44303756), (7, 31645540), (10, 22151878), (14, 15822770), (20, 11075939), (28, 7911385), (35, 6329108), (70, 3164554), (140, 1582277), (521, 425180), (1042, 212590), (2084, 106295), (2605, 85036), (3037, 72940), (3647, 60740), (5210, 42518), (6074, 36470), (7294, 30370), (10420, 21259), (12148, 18235), (14588, 15185)]