78981021

素因数分解:

$3^3\times 7^1\times {\mathrm{509}}^1\times {\mathrm{821}}^1$

素因数の和:1346

約数の個数: 32

約数和(自身を含む): 134150400

約数和(自身を除く): 55169379

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 509, 821, 1527, 2463, 3563, 4581, 5747, 7389, 10689, 13743, 17241, 22167, 32067, 51723, 96201, 155169, 417889, 1253667, 2925223, 3761001, 8775669, 11283003, 26327007, 78981021]

約数ペア:

[(1, 78981021), (3, 26327007), (7, 11283003), (9, 8775669), (21, 3761001), (27, 2925223), (63, 1253667), (189, 417889), (509, 155169), (821, 96201), (1527, 51723), (2463, 32067), (3563, 22167), (4581, 17241), (5747, 13743), (7389, 10689)]