204638721

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1\times {\mathrm{1279}}^1$

素因数の和:1709

約数の個数: 32

約数和(自身を含む): 329318400

約数和(自身を除く): 124679679

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 401, 1203, 1279, 2807, 3837, 7619, 8421, 8953, 22857, 24301, 26859, 53333, 72903, 159999, 170107, 510321, 512879, 1538637, 3590153, 9744701, 10770459, 29234103, 68212907, 204638721]

約数ペア:

[(1, 204638721), (3, 68212907), (7, 29234103), (19, 10770459), (21, 9744701), (57, 3590153), (133, 1538637), (399, 512879), (401, 510321), (1203, 170107), (1279, 159999), (2807, 72903), (3837, 53333), (7619, 26859), (8421, 24301), (8953, 22857)]