18876728

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{233}}^1$

素因数の和:312

約数の個数: 64

約数和(自身を含む): 41277600

約数和(自身を除く): 22400872

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 41, 52, 76, 82, 104, 152, 164, 233, 247, 328, 466, 494, 533, 779, 932, 988, 1066, 1558, 1864, 1976, 2132, 3029, 3116, 4264, 4427, 6058, 6232, 8854, 9553, 10127, 12116, 17708, 19106, 20254, 24232, 35416, 38212, 40508, 57551, 76424, 81016, 115102, 124189, 181507, 230204, 248378, 363014, 460408, 496756, 726028, 993512, 1452056, 2359591, 4719182, 9438364, 18876728]

約数ペア:

[(1, 18876728), (2, 9438364), (4, 4719182), (8, 2359591), (13, 1452056), (19, 993512), (26, 726028), (38, 496756), (41, 460408), (52, 363014), (76, 248378), (82, 230204), (104, 181507), (152, 124189), (164, 115102), (233, 81016), (247, 76424), (328, 57551), (466, 40508), (494, 38212), (533, 35416), (779, 24232), (932, 20254), (988, 19106), (1066, 17708), (1558, 12116), (1864, 10127), (1976, 9553), (2132, 8854), (3029, 6232), (3116, 6058), (4264, 4427)]