20951390

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1283}}^1$

素因数の和:1384

約数の個数: 32

約数和(自身を含む): 39937536

約数和(自身を除く): 18986146

約数列:

[1, 2, 5, 10, 23, 46, 71, 115, 142, 230, 355, 710, 1283, 1633, 2566, 3266, 6415, 8165, 12830, 16330, 29509, 59018, 91093, 147545, 182186, 295090, 455465, 910930, 2095139, 4190278, 10475695, 20951390]

約数ペア:

[(1, 20951390), (2, 10475695), (5, 4190278), (10, 2095139), (23, 910930), (46, 455465), (71, 295090), (115, 182186), (142, 147545), (230, 91093), (355, 59018), (710, 29509), (1283, 16330), (1633, 12830), (2566, 8165), (3266, 6415)]