21778866

素因数分解:

$2^1\times 3^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{617}}^1$

素因数の和:715

約数の個数: 48

約数和(自身を含む): 49457304

約数和(自身を除く): 27678438

約数列:

[1, 2, 3, 6, 9, 18, 37, 53, 74, 106, 111, 159, 222, 318, 333, 477, 617, 666, 954, 1234, 1851, 1961, 3702, 3922, 5553, 5883, 11106, 11766, 17649, 22829, 32701, 35298, 45658, 65402, 68487, 98103, 136974, 196206, 205461, 294309, 410922, 588618, 1209937, 2419874, 3629811, 7259622, 10889433, 21778866]

約数ペア:

[(1, 21778866), (2, 10889433), (3, 7259622), (6, 3629811), (9, 2419874), (18, 1209937), (37, 588618), (53, 410922), (74, 294309), (106, 205461), (111, 196206), (159, 136974), (222, 98103), (318, 68487), (333, 65402), (477, 45658), (617, 35298), (666, 32701), (954, 22829), (1234, 17649), (1851, 11766), (1961, 11106), (3702, 5883), (3922, 5553)]