21294760

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^2\times {\mathrm{241}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 49157460

約数和(自身を除く): 27862700

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 241, 376, 470, 482, 940, 964, 1205, 1880, 1928, 2209, 2410, 4418, 4820, 8836, 9640, 11045, 11327, 17672, 22090, 22654, 44180, 45308, 56635, 88360, 90616, 113270, 226540, 453080, 532369, 1064738, 2129476, 2661845, 4258952, 5323690, 10647380, 21294760]

約数ペア:

[(1, 21294760), (2, 10647380), (4, 5323690), (5, 4258952), (8, 2661845), (10, 2129476), (20, 1064738), (40, 532369), (47, 453080), (94, 226540), (188, 113270), (235, 90616), (241, 88360), (376, 56635), (470, 45308), (482, 44180), (940, 22654), (964, 22090), (1205, 17672), (1880, 11327), (1928, 11045), (2209, 9640), (2410, 8836), (4418, 4820)]