398367081

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{203977}}^1$

素因数の和:204021

約数の個数: 24

約数和(自身を含む): 678838784

約数和(自身を除く): 280471703

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 203977, 611931, 1427839, 1835793, 4283517, 6323287, 12850551, 18969861, 44263009, 56909583, 132789027, 398367081]

約数ペア:

[(1, 398367081), (3, 132789027), (7, 56909583), (9, 44263009), (21, 18969861), (31, 12850551), (63, 6323287), (93, 4283517), (217, 1835793), (279, 1427839), (651, 611931), (1953, 203977)]