80940640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45989}}^1$

素因数の和:46015

約数の個数: 48

約数和(自身を含む): 208610640

約数和(自身を除く): 127670000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 45989, 91978, 183956, 229945, 367912, 459890, 505879, 735824, 919780, 1011758, 1471648, 1839560, 2023516, 2529395, 3679120, 4047032, 5058790, 7358240, 8094064, 10117580, 16188128, 20235160, 40470320, 80940640]

約数ペア:

[(1, 80940640), (2, 40470320), (4, 20235160), (5, 16188128), (8, 10117580), (10, 8094064), (11, 7358240), (16, 5058790), (20, 4047032), (22, 3679120), (32, 2529395), (40, 2023516), (44, 1839560), (55, 1471648), (80, 1011758), (88, 919780), (110, 735824), (160, 505879), (176, 459890), (220, 367912), (352, 229945), (440, 183956), (880, 91978), (1760, 45989)]