21991306791

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{1087}}^1\times {\mathrm{1879}}^1$

素因数の和:3103

約数の個数: 32

約数和(自身を含む): 30468874240

約数和(自身を除く): 8477567449

約数列:

[1, 3, 37, 97, 111, 291, 1087, 1879, 3261, 3589, 5637, 10767, 40219, 69523, 105439, 120657, 182263, 208569, 316317, 546789, 2042473, 3901243, 6127419, 6743731, 11703729, 20231193, 75571501, 198119881, 226714503, 594359643, 7330435597, 21991306791]

約数ペア:

[(1, 21991306791), (3, 7330435597), (37, 594359643), (97, 226714503), (111, 198119881), (291, 75571501), (1087, 20231193), (1879, 11703729), (3261, 6743731), (3589, 6127419), (5637, 3901243), (10767, 2042473), (40219, 546789), (69523, 316317), (105439, 208569), (120657, 182263)]