21672875

素因数分解:

$5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:117

約数の個数: 64

約数和(自身を含む): 34504704

約数和(自身を除く): 12831829

約数列:

[1, 5, 7, 17, 25, 31, 35, 47, 85, 119, 125, 155, 175, 217, 235, 329, 425, 527, 595, 775, 799, 875, 1085, 1175, 1457, 1645, 2125, 2635, 2975, 3689, 3875, 3995, 5425, 5593, 5875, 7285, 8225, 10199, 13175, 14875, 18445, 19975, 24769, 27125, 27965, 36425, 41125, 50995, 65875, 92225, 99875, 123845, 139825, 173383, 182125, 254975, 461125, 619225, 699125, 866915, 1274875, 3096125, 4334575, 21672875]

約数ペア:

[(1, 21672875), (5, 4334575), (7, 3096125), (17, 1274875), (25, 866915), (31, 699125), (35, 619225), (47, 461125), (85, 254975), (119, 182125), (125, 173383), (155, 139825), (175, 123845), (217, 99875), (235, 92225), (329, 65875), (425, 50995), (527, 41125), (595, 36425), (775, 27965), (799, 27125), (875, 24769), (1085, 19975), (1175, 18445), (1457, 14875), (1645, 13175), (2125, 10199), (2635, 8225), (2975, 7285), (3689, 5875), (3875, 5593), (3995, 5425)]