64851040

素因数分解:

$2^5\times 5^1\times {\mathrm{409}}^1\times {\mathrm{991}}^1$

素因数の和:1415

約数の個数: 48

約数和(自身を含む): 153740160

約数和(自身を除く): 88889120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 409, 818, 991, 1636, 1982, 2045, 3272, 3964, 4090, 4955, 6544, 7928, 8180, 9910, 13088, 15856, 16360, 19820, 31712, 32720, 39640, 65440, 79280, 158560, 405319, 810638, 1621276, 2026595, 3242552, 4053190, 6485104, 8106380, 12970208, 16212760, 32425520, 64851040]

約数ペア:

[(1, 64851040), (2, 32425520), (4, 16212760), (5, 12970208), (8, 8106380), (10, 6485104), (16, 4053190), (20, 3242552), (32, 2026595), (40, 1621276), (80, 810638), (160, 405319), (409, 158560), (818, 79280), (991, 65440), (1636, 39640), (1982, 32720), (2045, 31712), (3272, 19820), (3964, 16360), (4090, 15856), (4955, 13088), (6544, 9910), (7928, 8180)]