21000474620

素因数分解:

$2^2\times 5^1\times {\mathrm{10357}}^1\times {\mathrm{101383}}^1$

素因数の和:111749

約数の個数: 24

約数和(自身を含む): 44105689824

約数和(自身を除く): 23105215204

約数列:

[1, 2, 4, 5, 10, 20, 10357, 20714, 41428, 51785, 101383, 103570, 202766, 207140, 405532, 506915, 1013830, 2027660, 1050023731, 2100047462, 4200094924, 5250118655, 10500237310, 21000474620]

約数ペア:

[(1, 21000474620), (2, 10500237310), (4, 5250118655), (5, 4200094924), (10, 2100047462), (20, 1050023731), (10357, 2027660), (20714, 1013830), (41428, 506915), (51785, 405532), (101383, 207140), (103570, 202766)]