20851128

素因数分解:

$2^3\times 3^3\times {\mathrm{37}}^1\times {\mathrm{2609}}^1$

素因数の和:2661

約数の個数: 64

約数和(自身を含む): 59508000

約数和(自身を除く): 38656872

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 37, 54, 72, 74, 108, 111, 148, 216, 222, 296, 333, 444, 666, 888, 999, 1332, 1998, 2609, 2664, 3996, 5218, 7827, 7992, 10436, 15654, 20872, 23481, 31308, 46962, 62616, 70443, 93924, 96533, 140886, 187848, 193066, 281772, 289599, 386132, 563544, 579198, 772264, 868797, 1158396, 1737594, 2316792, 2606391, 3475188, 5212782, 6950376, 10425564, 20851128]

約数ペア:

[(1, 20851128), (2, 10425564), (3, 6950376), (4, 5212782), (6, 3475188), (8, 2606391), (9, 2316792), (12, 1737594), (18, 1158396), (24, 868797), (27, 772264), (36, 579198), (37, 563544), (54, 386132), (72, 289599), (74, 281772), (108, 193066), (111, 187848), (148, 140886), (216, 96533), (222, 93924), (296, 70443), (333, 62616), (444, 46962), (666, 31308), (888, 23481), (999, 20872), (1332, 15654), (1998, 10436), (2609, 7992), (2664, 7827), (3996, 5218)]