12963576680

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{500911}}^1$

素因数の和:501569

約数の個数: 32

約数和(自身を含む): 29213187840

約数和(自身を除く): 16249611160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2588, 3235, 5176, 6470, 12940, 25880, 500911, 1001822, 2003644, 2504555, 4007288, 5009110, 10018220, 20036440, 324089417, 648178834, 1296357668, 1620447085, 2592715336, 3240894170, 6481788340, 12963576680]

約数ペア:

[(1, 12963576680), (2, 6481788340), (4, 3240894170), (5, 2592715336), (8, 1620447085), (10, 1296357668), (20, 648178834), (40, 324089417), (647, 20036440), (1294, 10018220), (2588, 5009110), (3235, 4007288), (5176, 2504555), (6470, 2003644), (12940, 1001822), (25880, 500911)]