218880305

素因数分解:

$5^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:259

約数の個数: 64

約数和(自身を含む): 331776000

約数和(自身を除く): 112895695

約数列:

[1, 5, 7, 23, 31, 35, 49, 115, 155, 161, 179, 217, 245, 343, 713, 805, 895, 1085, 1127, 1253, 1519, 1715, 3565, 4117, 4991, 5549, 5635, 6265, 7595, 7889, 8771, 10633, 20585, 24955, 27745, 28819, 34937, 38843, 39445, 43855, 53165, 61397, 127627, 144095, 174685, 194215, 201733, 244559, 271901, 306985, 638135, 893389, 1008665, 1222795, 1359505, 1412131, 1903307, 4466945, 6253723, 7060655, 9516535, 31268615, 43776061, 218880305]

約数ペア:

[(1, 218880305), (5, 43776061), (7, 31268615), (23, 9516535), (31, 7060655), (35, 6253723), (49, 4466945), (115, 1903307), (155, 1412131), (161, 1359505), (179, 1222795), (217, 1008665), (245, 893389), (343, 638135), (713, 306985), (805, 271901), (895, 244559), (1085, 201733), (1127, 194215), (1253, 174685), (1519, 144095), (1715, 127627), (3565, 61397), (4117, 53165), (4991, 43855), (5549, 39445), (5635, 38843), (6265, 34937), (7595, 28819), (7889, 27745), (8771, 24955), (10633, 20585)]