19729917

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{179}}^1\times {\mathrm{331}}^1$

素因数の和:553

約数の個数: 24

約数和(自身を含む): 29521440

約数和(自身を除く): 9791523

約数列:

[1, 3, 9, 37, 111, 179, 331, 333, 537, 993, 1611, 2979, 6623, 12247, 19869, 36741, 59249, 59607, 110223, 177747, 533241, 2192213, 6576639, 19729917]

約数ペア:

[(1, 19729917), (3, 6576639), (9, 2192213), (37, 533241), (111, 177747), (179, 110223), (331, 59607), (333, 59249), (537, 36741), (993, 19869), (1611, 12247), (2979, 6623)]