21639176

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 47174400

約数和(自身を除く): 25535224

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 47, 52, 76, 94, 104, 152, 188, 233, 247, 376, 466, 494, 611, 893, 932, 988, 1222, 1786, 1864, 1976, 2444, 3029, 3572, 4427, 4888, 6058, 7144, 8854, 10951, 11609, 12116, 17708, 21902, 23218, 24232, 35416, 43804, 46436, 57551, 87608, 92872, 115102, 142363, 208069, 230204, 284726, 416138, 460408, 569452, 832276, 1138904, 1664552, 2704897, 5409794, 10819588, 21639176]

約数ペア:

[(1, 21639176), (2, 10819588), (4, 5409794), (8, 2704897), (13, 1664552), (19, 1138904), (26, 832276), (38, 569452), (47, 460408), (52, 416138), (76, 284726), (94, 230204), (104, 208069), (152, 142363), (188, 115102), (233, 92872), (247, 87608), (376, 57551), (466, 46436), (494, 43804), (611, 35416), (893, 24232), (932, 23218), (988, 21902), (1222, 17708), (1786, 12116), (1864, 11609), (1976, 10951), (2444, 8854), (3029, 7144), (3572, 6058), (4427, 4888)]