20909770

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{307}}^1$

素因数の和:467

約数の個数: 48

約数和(自身を含む): 44241120

約数和(自身を除く): 23331350

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 139, 245, 278, 307, 490, 614, 695, 973, 1390, 1535, 1946, 2149, 3070, 4298, 4865, 6811, 9730, 10745, 13622, 15043, 21490, 30086, 34055, 42673, 68110, 75215, 85346, 150430, 213365, 298711, 426730, 597422, 1493555, 2090977, 2987110, 4181954, 10454885, 20909770]

約数ペア:

[(1, 20909770), (2, 10454885), (5, 4181954), (7, 2987110), (10, 2090977), (14, 1493555), (35, 597422), (49, 426730), (70, 298711), (98, 213365), (139, 150430), (245, 85346), (278, 75215), (307, 68110), (490, 42673), (614, 34055), (695, 30086), (973, 21490), (1390, 15043), (1535, 13622), (1946, 10745), (2149, 9730), (3070, 6811), (4298, 4865)]