10720840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{389}}^1$

素因数の和:466

約数の個数: 64

約数和(自身を含む): 26535600

約数和(自身を除く): 15814760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 53, 65, 104, 106, 130, 212, 260, 265, 389, 424, 520, 530, 689, 778, 1060, 1378, 1556, 1945, 2120, 2756, 3112, 3445, 3890, 5057, 5512, 6890, 7780, 10114, 13780, 15560, 20228, 20617, 25285, 27560, 40456, 41234, 50570, 82468, 101140, 103085, 164936, 202280, 206170, 268021, 412340, 536042, 824680, 1072084, 1340105, 2144168, 2680210, 5360420, 10720840]

約数ペア:

[(1, 10720840), (2, 5360420), (4, 2680210), (5, 2144168), (8, 1340105), (10, 1072084), (13, 824680), (20, 536042), (26, 412340), (40, 268021), (52, 206170), (53, 202280), (65, 164936), (104, 103085), (106, 101140), (130, 82468), (212, 50570), (260, 41234), (265, 40456), (389, 27560), (424, 25285), (520, 20617), (530, 20228), (689, 15560), (778, 13780), (1060, 10114), (1378, 7780), (1556, 6890), (1945, 5512), (2120, 5057), (2756, 3890), (3112, 3445)]