20528816

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{877}}^1$

素因数の和:922

約数の個数: 80

約数和(自身を含む): 52258560

約数和(自身を除く): 31729744

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 19, 22, 28, 38, 44, 56, 76, 77, 88, 112, 133, 152, 154, 176, 209, 266, 304, 308, 418, 532, 616, 836, 877, 1064, 1232, 1463, 1672, 1754, 2128, 2926, 3344, 3508, 5852, 6139, 7016, 9647, 11704, 12278, 14032, 16663, 19294, 23408, 24556, 33326, 38588, 49112, 66652, 67529, 77176, 98224, 116641, 133304, 135058, 154352, 183293, 233282, 266608, 270116, 366586, 466564, 540232, 733172, 933128, 1080464, 1283051, 1466344, 1866256, 2566102, 2932688, 5132204, 10264408, 20528816]

約数ペア:

[(1, 20528816), (2, 10264408), (4, 5132204), (7, 2932688), (8, 2566102), (11, 1866256), (14, 1466344), (16, 1283051), (19, 1080464), (22, 933128), (28, 733172), (38, 540232), (44, 466564), (56, 366586), (76, 270116), (77, 266608), (88, 233282), (112, 183293), (133, 154352), (152, 135058), (154, 133304), (176, 116641), (209, 98224), (266, 77176), (304, 67529), (308, 66652), (418, 49112), (532, 38588), (616, 33326), (836, 24556), (877, 23408), (1064, 19294), (1232, 16663), (1463, 14032), (1672, 12278), (1754, 11704), (2128, 9647), (2926, 7016), (3344, 6139), (3508, 5852)]