1221545985

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1\times {\mathrm{787}}^1$

素因数の和:1238

約数の個数: 64

約数和(自身を含む): 2233128960

約数和(自身を除く): 1011582975

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 115, 165, 253, 345, 409, 759, 787, 1227, 1265, 2045, 2361, 3795, 3935, 4499, 6135, 8657, 9407, 11805, 13497, 18101, 22495, 25971, 28221, 43285, 47035, 54303, 67485, 90505, 103477, 129855, 141105, 199111, 271515, 310431, 321883, 517385, 597333, 965649, 995555, 1552155, 1609415, 2986665, 3540713, 4828245, 7403309, 10622139, 17703565, 22209927, 37016545, 53110695, 81436399, 111049635, 244309197, 407181995, 1221545985]

約数ペア:

[(1, 1221545985), (3, 407181995), (5, 244309197), (11, 111049635), (15, 81436399), (23, 53110695), (33, 37016545), (55, 22209927), (69, 17703565), (115, 10622139), (165, 7403309), (253, 4828245), (345, 3540713), (409, 2986665), (759, 1609415), (787, 1552155), (1227, 995555), (1265, 965649), (2045, 597333), (2361, 517385), (3795, 321883), (3935, 310431), (4499, 271515), (6135, 199111), (8657, 141105), (9407, 129855), (11805, 103477), (13497, 90505), (18101, 67485), (22495, 54303), (25971, 47035), (28221, 43285)]