20218561615

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{2411}}^1$

素因数の和:2644

約数の個数: 64

約数和(自身を含む): 29342269440

約数和(自身を除く): 9123707825

約数列:

[1, 5, 7, 31, 35, 59, 131, 155, 217, 295, 413, 655, 917, 1085, 1829, 2065, 2411, 4061, 4585, 7729, 9145, 12055, 12803, 16877, 20305, 28427, 38645, 54103, 64015, 74741, 84385, 142135, 142249, 239599, 270515, 315841, 373705, 523187, 711245, 995743, 1197995, 1579205, 1677193, 2210887, 2615935, 4409719, 4978715, 8385965, 9791071, 11054435, 18634619, 22048595, 30868033, 48955355, 68537497, 93173095, 130442333, 154340165, 342687485, 577673189, 652211665, 2888365945, 4043712323, 20218561615]

約数ペア:

[(1, 20218561615), (5, 4043712323), (7, 2888365945), (31, 652211665), (35, 577673189), (59, 342687485), (131, 154340165), (155, 130442333), (217, 93173095), (295, 68537497), (413, 48955355), (655, 30868033), (917, 22048595), (1085, 18634619), (1829, 11054435), (2065, 9791071), (2411, 8385965), (4061, 4978715), (4585, 4409719), (7729, 2615935), (9145, 2210887), (12055, 1677193), (12803, 1579205), (16877, 1197995), (20305, 995743), (28427, 711245), (38645, 523187), (54103, 373705), (64015, 315841), (74741, 270515), (84385, 239599), (142135, 142249)]