212955813

素因数分解:

$3^2\times 7^2\times {\mathrm{643}}^1\times {\mathrm{751}}^1$

素因数の和:1414

約数の個数: 36

約数和(自身を含む): 358857408

約数和(自身を除く): 145901595

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 643, 751, 1929, 2253, 4501, 5257, 5787, 6759, 13503, 15771, 31507, 36799, 40509, 47313, 94521, 110397, 283563, 331191, 482893, 1448679, 3380251, 4346037, 10140753, 23661757, 30422259, 70985271, 212955813]

約数ペア:

[(1, 212955813), (3, 70985271), (7, 30422259), (9, 23661757), (21, 10140753), (49, 4346037), (63, 3380251), (147, 1448679), (441, 482893), (643, 331191), (751, 283563), (1929, 110397), (2253, 94521), (4501, 47313), (5257, 40509), (5787, 36799), (6759, 31507), (13503, 15771)]