221401520

素因数分解:

$2^4\times 5^1\times {\mathrm{179}}^1\times {\mathrm{15461}}^1$

素因数の和:15653

約数の個数: 40

約数和(自身を含む): 517667760

約数和(自身を除く): 296266240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 179, 358, 716, 895, 1432, 1790, 2864, 3580, 7160, 14320, 15461, 30922, 61844, 77305, 123688, 154610, 247376, 309220, 618440, 1236880, 2767519, 5535038, 11070076, 13837595, 22140152, 27675190, 44280304, 55350380, 110700760, 221401520]

約数ペア:

[(1, 221401520), (2, 110700760), (4, 55350380), (5, 44280304), (8, 27675190), (10, 22140152), (16, 13837595), (20, 11070076), (40, 5535038), (80, 2767519), (179, 1236880), (358, 618440), (716, 309220), (895, 247376), (1432, 154610), (1790, 123688), (2864, 77305), (3580, 61844), (7160, 30922), (14320, 15461)]