72142780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{907}}^1$

素因数の和:1054

約数の個数: 48

約数和(自身を含む): 156967776

約数和(自身を除く): 84824996

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 97, 164, 194, 205, 388, 410, 485, 820, 907, 970, 1814, 1940, 3628, 3977, 4535, 7954, 9070, 15908, 18140, 19885, 37187, 39770, 74374, 79540, 87979, 148748, 175958, 185935, 351916, 371870, 439895, 743740, 879790, 1759580, 3607139, 7214278, 14428556, 18035695, 36071390, 72142780]

約数ペア:

[(1, 72142780), (2, 36071390), (4, 18035695), (5, 14428556), (10, 7214278), (20, 3607139), (41, 1759580), (82, 879790), (97, 743740), (164, 439895), (194, 371870), (205, 351916), (388, 185935), (410, 175958), (485, 148748), (820, 87979), (907, 79540), (970, 74374), (1814, 39770), (1940, 37187), (3628, 19885), (3977, 18140), (4535, 15908), (7954, 9070)]