21399948

素因数分解:

$2^2\times 3^2\times {\mathrm{137}}^1\times {\mathrm{4339}}^1$

素因数の和:4486

約数の個数: 36

約数和(自身を含む): 54501720

約数和(自身を除く): 33101772

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 137, 274, 411, 548, 822, 1233, 1644, 2466, 4339, 4932, 8678, 13017, 17356, 26034, 39051, 52068, 78102, 156204, 594443, 1188886, 1783329, 2377772, 3566658, 5349987, 7133316, 10699974, 21399948]

約数ペア:

[(1, 21399948), (2, 10699974), (3, 7133316), (4, 5349987), (6, 3566658), (9, 2377772), (12, 1783329), (18, 1188886), (36, 594443), (137, 156204), (274, 78102), (411, 52068), (548, 39051), (822, 26034), (1233, 17356), (1644, 13017), (2466, 8678), (4339, 4932)]