21092660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1181}}^1$

素因数の和:1256

約数の個数: 48

約数和(自身を含む): 47658240

約数和(自身を除く): 26565580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 188, 190, 235, 380, 470, 893, 940, 1181, 1786, 2362, 3572, 4465, 4724, 5905, 8930, 11810, 17860, 22439, 23620, 44878, 55507, 89756, 111014, 112195, 222028, 224390, 277535, 448780, 555070, 1054633, 1110140, 2109266, 4218532, 5273165, 10546330, 21092660]

約数ペア:

[(1, 21092660), (2, 10546330), (4, 5273165), (5, 4218532), (10, 2109266), (19, 1110140), (20, 1054633), (38, 555070), (47, 448780), (76, 277535), (94, 224390), (95, 222028), (188, 112195), (190, 111014), (235, 89756), (380, 55507), (470, 44878), (893, 23620), (940, 22439), (1181, 17860), (1786, 11810), (2362, 8930), (3572, 5905), (4465, 4724)]