28163919

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{541}}^1$

素因数の和:655

約数の個数: 32

約数和(自身を含む): 44816896

約数和(自身を除く): 16652977

約数列:

[1, 3, 7, 21, 37, 67, 111, 201, 259, 469, 541, 777, 1407, 1623, 2479, 3787, 7437, 11361, 17353, 20017, 36247, 52059, 60051, 108741, 140119, 253729, 420357, 761187, 1341139, 4023417, 9387973, 28163919]

約数ペア:

[(1, 28163919), (3, 9387973), (7, 4023417), (21, 1341139), (37, 761187), (67, 420357), (111, 253729), (201, 140119), (259, 108741), (469, 60051), (541, 52059), (777, 36247), (1407, 20017), (1623, 17353), (2479, 11361), (3787, 7437)]