18867804921

素因数分解:

$3^2\times 7^1\times {\mathrm{1249}}^1\times {\mathrm{239783}}^1$

素因数の和:241045

約数の個数: 24

約数和(自身を含む): 31171920000

約数和(自身を除く): 12304115079

約数列:

[1, 3, 7, 9, 21, 63, 1249, 3747, 8743, 11241, 26229, 78687, 239783, 719349, 1678481, 2158047, 5035443, 15106329, 299488967, 898466901, 2096422769, 2695400703, 6289268307, 18867804921]

約数ペア:

[(1, 18867804921), (3, 6289268307), (7, 2695400703), (9, 2096422769), (21, 898466901), (63, 299488967), (1249, 15106329), (3747, 5035443), (8743, 2158047), (11241, 1678481), (26229, 719349), (78687, 239783)]