18442940

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 40061952

約数和(自身を除く): 21619012

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 127, 137, 212, 254, 265, 274, 508, 530, 548, 635, 685, 1060, 1270, 1370, 2540, 2740, 6731, 7261, 13462, 14522, 17399, 26924, 29044, 33655, 34798, 36305, 67310, 69596, 72610, 86995, 134620, 145220, 173990, 347980, 922147, 1844294, 3688588, 4610735, 9221470, 18442940]

約数ペア:

[(1, 18442940), (2, 9221470), (4, 4610735), (5, 3688588), (10, 1844294), (20, 922147), (53, 347980), (106, 173990), (127, 145220), (137, 134620), (212, 86995), (254, 72610), (265, 69596), (274, 67310), (508, 36305), (530, 34798), (548, 33655), (635, 29044), (685, 26924), (1060, 17399), (1270, 14522), (1370, 13462), (2540, 7261), (2740, 6731)]