20589008

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:216

約数の個数: 80

約数和(自身を含む): 47139840

約数和(自身を除く): 26550832

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 38, 44, 47, 76, 88, 94, 131, 152, 176, 188, 209, 262, 304, 376, 418, 517, 524, 752, 836, 893, 1034, 1048, 1441, 1672, 1786, 2068, 2096, 2489, 2882, 3344, 3572, 4136, 4978, 5764, 6157, 7144, 8272, 9823, 9956, 11528, 12314, 14288, 19646, 19912, 23056, 24628, 27379, 39292, 39824, 49256, 54758, 67727, 78584, 98512, 109516, 116983, 135454, 157168, 219032, 233966, 270908, 438064, 467932, 541816, 935864, 1083632, 1286813, 1871728, 2573626, 5147252, 10294504, 20589008]

約数ペア:

[(1, 20589008), (2, 10294504), (4, 5147252), (8, 2573626), (11, 1871728), (16, 1286813), (19, 1083632), (22, 935864), (38, 541816), (44, 467932), (47, 438064), (76, 270908), (88, 233966), (94, 219032), (131, 157168), (152, 135454), (176, 116983), (188, 109516), (209, 98512), (262, 78584), (304, 67727), (376, 54758), (418, 49256), (517, 39824), (524, 39292), (752, 27379), (836, 24628), (893, 23056), (1034, 19912), (1048, 19646), (1441, 14288), (1672, 12314), (1786, 11528), (2068, 9956), (2096, 9823), (2489, 8272), (2882, 7144), (3344, 6157), (3572, 5764), (4136, 4978)]