20785989110

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{210619}}^1$

素因数の和:210836

約数の個数: 32

約数和(自身を含む): 38214892800

約数和(自身を除く): 17428903690

約数列:

[1, 2, 5, 10, 71, 139, 142, 278, 355, 695, 710, 1390, 9869, 19738, 49345, 98690, 210619, 421238, 1053095, 2106190, 14953949, 29276041, 29907898, 58552082, 74769745, 146380205, 149539490, 292760410, 2078598911, 4157197822, 10392994555, 20785989110]

約数ペア:

[(1, 20785989110), (2, 10392994555), (5, 4157197822), (10, 2078598911), (71, 292760410), (139, 149539490), (142, 146380205), (278, 74769745), (355, 58552082), (695, 29907898), (710, 29276041), (1390, 14953949), (9869, 2106190), (19738, 1053095), (49345, 421238), (98690, 210619)]