21491323215

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{241}}^1\times {\mathrm{1747}}^1$

素因数の和:2120

約数の個数: 64

約数和(自身を含む): 35817610752

約数和(自身を除く): 14326287537

約数列:

[1, 3, 5, 15, 41, 83, 123, 205, 241, 249, 415, 615, 723, 1205, 1245, 1747, 3403, 3615, 5241, 8735, 9881, 10209, 17015, 20003, 26205, 29643, 49405, 51045, 60009, 71627, 100015, 145001, 148215, 214881, 300045, 358135, 421027, 435003, 725005, 820123, 1074405, 1263081, 2105135, 2175015, 2460369, 4100615, 5945041, 6315405, 12301845, 17262107, 17835123, 29725205, 34945241, 51786321, 86310535, 89175615, 104835723, 174726205, 258931605, 524178615, 1432754881, 4298264643, 7163774405, 21491323215]

約数ペア:

[(1, 21491323215), (3, 7163774405), (5, 4298264643), (15, 1432754881), (41, 524178615), (83, 258931605), (123, 174726205), (205, 104835723), (241, 89175615), (249, 86310535), (415, 51786321), (615, 34945241), (723, 29725205), (1205, 17835123), (1245, 17262107), (1747, 12301845), (3403, 6315405), (3615, 5945041), (5241, 4100615), (8735, 2460369), (9881, 2175015), (10209, 2105135), (17015, 1263081), (20003, 1074405), (26205, 820123), (29643, 725005), (49405, 435003), (51045, 421027), (60009, 358135), (71627, 300045), (100015, 214881), (145001, 148215)]