21150940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22501}}^1$

素因数の和:22557

約数の個数: 24

約数和(自身を含む): 45364032

約数和(自身を除く): 24213092

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22501, 45002, 90004, 112505, 225010, 450020, 1057547, 2115094, 4230188, 5287735, 10575470, 21150940]

約数ペア:

[(1, 21150940), (2, 10575470), (4, 5287735), (5, 4230188), (10, 2115094), (20, 1057547), (47, 450020), (94, 225010), (188, 112505), (235, 90004), (470, 45002), (940, 22501)]