397733973

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{76679}}^1$

素因数の和:76721

約数の個数: 32

約数和(自身を含む): 687052800

約数和(自身を除く): 289318827

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 5187, 76679, 230037, 536753, 996827, 1456901, 1610259, 2990481, 4370703, 6977789, 10198307, 18939713, 20933367, 30594921, 56819139, 132577991, 397733973]

約数ペア:

[(1, 397733973), (3, 132577991), (7, 56819139), (13, 30594921), (19, 20933367), (21, 18939713), (39, 10198307), (57, 6977789), (91, 4370703), (133, 2990481), (247, 1610259), (273, 1456901), (399, 996827), (741, 536753), (1729, 230037), (5187, 76679)]