219997940

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1\times {\mathrm{751}}^1$

素因数の和:1008

約数の個数: 48

約数和(自身を含む): 470475264

約数和(自身を除く): 250477324

約数列:

[1, 2, 4, 5, 10, 20, 97, 151, 194, 302, 388, 485, 604, 751, 755, 970, 1502, 1510, 1940, 3004, 3020, 3755, 7510, 14647, 15020, 29294, 58588, 72847, 73235, 113401, 145694, 146470, 226802, 291388, 292940, 364235, 453604, 567005, 728470, 1134010, 1456940, 2268020, 10999897, 21999794, 43999588, 54999485, 109998970, 219997940]

約数ペア:

[(1, 219997940), (2, 109998970), (4, 54999485), (5, 43999588), (10, 21999794), (20, 10999897), (97, 2268020), (151, 1456940), (194, 1134010), (302, 728470), (388, 567005), (485, 453604), (604, 364235), (751, 292940), (755, 291388), (970, 226802), (1502, 146470), (1510, 145694), (1940, 113401), (3004, 73235), (3020, 72847), (3755, 58588), (7510, 29294), (14647, 15020)]