21991300

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{4679}}^1$

素因数の和:4740

約数の個数: 36

約数和(自身を含む): 48746880

約数和(自身を除く): 26755580

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 188, 235, 470, 940, 1175, 2350, 4679, 4700, 9358, 18716, 23395, 46790, 93580, 116975, 219913, 233950, 439826, 467900, 879652, 1099565, 2199130, 4398260, 5497825, 10995650, 21991300]

約数ペア:

[(1, 21991300), (2, 10995650), (4, 5497825), (5, 4398260), (10, 2199130), (20, 1099565), (25, 879652), (47, 467900), (50, 439826), (94, 233950), (100, 219913), (188, 116975), (235, 93580), (470, 46790), (940, 23395), (1175, 18716), (2350, 9358), (4679, 4700)]