990113919280

素因数分解:

$2^4\times 5^1\times {\mathrm{977}}^1\times {\mathrm{12667783}}^1$

素因数の和:12668773

約数の個数: 40

約数和(自身を含む): 2304371251872

約数和(自身を除く): 1314257332592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 977, 1954, 3908, 4885, 7816, 9770, 15632, 19540, 39080, 78160, 12667783, 25335566, 50671132, 63338915, 101342264, 126677830, 202684528, 253355660, 506711320, 1013422640, 12376423991, 24752847982, 49505695964, 61882119955, 99011391928, 123764239910, 198022783856, 247528479820, 495056959640, 990113919280]

約数ペア:

[(1, 990113919280), (2, 495056959640), (4, 247528479820), (5, 198022783856), (8, 123764239910), (10, 99011391928), (16, 61882119955), (20, 49505695964), (40, 24752847982), (80, 12376423991), (977, 1013422640), (1954, 506711320), (3908, 253355660), (4885, 202684528), (7816, 126677830), (9770, 101342264), (15632, 63338915), (19540, 50671132), (39080, 25335566), (78160, 12667783)]