21590870

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{317}}^1$

素因数の和:477

約数の個数: 48

約数和(自身を含む): 45677520

約数和(自身を除く): 24086650

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 139, 245, 278, 317, 490, 634, 695, 973, 1390, 1585, 1946, 2219, 3170, 4438, 4865, 6811, 9730, 11095, 13622, 15533, 22190, 31066, 34055, 44063, 68110, 77665, 88126, 155330, 220315, 308441, 440630, 616882, 1542205, 2159087, 3084410, 4318174, 10795435, 21590870]

約数ペア:

[(1, 21590870), (2, 10795435), (5, 4318174), (7, 3084410), (10, 2159087), (14, 1542205), (35, 616882), (49, 440630), (70, 308441), (98, 220315), (139, 155330), (245, 88126), (278, 77665), (317, 68110), (490, 44063), (634, 34055), (695, 31066), (973, 22190), (1390, 15533), (1585, 13622), (1946, 11095), (2219, 9730), (3170, 6811), (4438, 4865)]