21279956542

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{211543}}^1$

素因数の和:211684

約数の個数: 32

約数和(自身を含む): 35503852608

約数和(自身を除く): 14223896066

約数列:

[1, 2, 13, 26, 53, 73, 106, 146, 689, 949, 1378, 1898, 3869, 7738, 50297, 100594, 211543, 423086, 2750059, 5500118, 11211779, 15442639, 22423558, 30885278, 145753127, 200754307, 291506254, 401508614, 818459867, 1636919734, 10639978271, 21279956542]

約数ペア:

[(1, 21279956542), (2, 10639978271), (13, 1636919734), (26, 818459867), (53, 401508614), (73, 291506254), (106, 200754307), (146, 145753127), (689, 30885278), (949, 22423558), (1378, 15442639), (1898, 11211779), (3869, 5500118), (7738, 2750059), (50297, 423086), (100594, 211543)]