21856065

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1$

素因数の和:302

約数の個数: 64

約数和(自身を含む): 44236800

約数和(自身を除く): 22380735

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 127, 149, 165, 231, 381, 385, 447, 635, 745, 889, 1043, 1155, 1397, 1639, 1905, 2235, 2667, 3129, 4191, 4445, 4917, 5215, 6985, 8195, 9779, 11473, 13335, 15645, 18923, 20955, 24585, 29337, 34419, 48895, 56769, 57365, 94615, 132461, 146685, 172095, 208153, 283845, 397383, 624459, 662305, 1040765, 1457071, 1986915, 3122295, 4371213, 7285355, 21856065]

約数ペア:

[(1, 21856065), (3, 7285355), (5, 4371213), (7, 3122295), (11, 1986915), (15, 1457071), (21, 1040765), (33, 662305), (35, 624459), (55, 397383), (77, 283845), (105, 208153), (127, 172095), (149, 146685), (165, 132461), (231, 94615), (381, 57365), (385, 56769), (447, 48895), (635, 34419), (745, 29337), (889, 24585), (1043, 20955), (1155, 18923), (1397, 15645), (1639, 13335), (1905, 11473), (2235, 9779), (2667, 8195), (3129, 6985), (4191, 5215), (4445, 4917)]