21664180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1213}}^1$

素因数の和:1288

約数の個数: 48

約数和(自身を含む): 48948480

約数和(自身を除く): 27284300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 188, 190, 235, 380, 470, 893, 940, 1213, 1786, 2426, 3572, 4465, 4852, 6065, 8930, 12130, 17860, 23047, 24260, 46094, 57011, 92188, 114022, 115235, 228044, 230470, 285055, 460940, 570110, 1083209, 1140220, 2166418, 4332836, 5416045, 10832090, 21664180]

約数ペア:

[(1, 21664180), (2, 10832090), (4, 5416045), (5, 4332836), (10, 2166418), (19, 1140220), (20, 1083209), (38, 570110), (47, 460940), (76, 285055), (94, 230470), (95, 228044), (188, 115235), (190, 114022), (235, 92188), (380, 57011), (470, 46094), (893, 24260), (940, 23047), (1213, 17860), (1786, 12130), (2426, 8930), (3572, 6065), (4465, 4852)]