40989988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 80015040

約数和(自身を除く): 39025052

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 107, 139, 212, 214, 278, 428, 556, 689, 1378, 1391, 1807, 2756, 2782, 3614, 5564, 5671, 7228, 7367, 11342, 14734, 14873, 22684, 29468, 29746, 59492, 73723, 95771, 147446, 191542, 193349, 294892, 383084, 386698, 773396, 788269, 1576538, 3153076, 10247497, 20494994, 40989988]

約数ペア:

[(1, 40989988), (2, 20494994), (4, 10247497), (13, 3153076), (26, 1576538), (52, 788269), (53, 773396), (106, 386698), (107, 383084), (139, 294892), (212, 193349), (214, 191542), (278, 147446), (428, 95771), (556, 73723), (689, 59492), (1378, 29746), (1391, 29468), (1807, 22684), (2756, 14873), (2782, 14734), (3614, 11342), (5564, 7367), (5671, 7228)]