21237180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:239

約数の個数: 96

約数和(自身を含む): 62233920

約数和(自身を除く): 40996740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 89, 97, 123, 164, 178, 194, 205, 246, 267, 291, 356, 388, 410, 445, 485, 492, 534, 582, 615, 820, 890, 970, 1068, 1164, 1230, 1335, 1455, 1780, 1940, 2460, 2670, 2910, 3649, 3977, 5340, 5820, 7298, 7954, 8633, 10947, 11931, 14596, 15908, 17266, 18245, 19885, 21894, 23862, 25899, 34532, 36490, 39770, 43165, 43788, 47724, 51798, 54735, 59655, 72980, 79540, 86330, 103596, 109470, 119310, 129495, 172660, 218940, 238620, 258990, 353953, 517980, 707906, 1061859, 1415812, 1769765, 2123718, 3539530, 4247436, 5309295, 7079060, 10618590, 21237180]

約数ペア:

[(1, 21237180), (2, 10618590), (3, 7079060), (4, 5309295), (5, 4247436), (6, 3539530), (10, 2123718), (12, 1769765), (15, 1415812), (20, 1061859), (30, 707906), (41, 517980), (60, 353953), (82, 258990), (89, 238620), (97, 218940), (123, 172660), (164, 129495), (178, 119310), (194, 109470), (205, 103596), (246, 86330), (267, 79540), (291, 72980), (356, 59655), (388, 54735), (410, 51798), (445, 47724), (485, 43788), (492, 43165), (534, 39770), (582, 36490), (615, 34532), (820, 25899), (890, 23862), (970, 21894), (1068, 19885), (1164, 18245), (1230, 17266), (1335, 15908), (1455, 14596), (1780, 11931), (1940, 10947), (2460, 8633), (2670, 7954), (2910, 7298), (3649, 5820), (3977, 5340)]