718191790

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{19889}}^1$

素因数の和:20076

約数の個数: 32

約数和(自身を含む): 1357611840

約数和(自身を除く): 639420050

約数列:

[1, 2, 5, 10, 23, 46, 115, 157, 230, 314, 785, 1570, 3611, 7222, 18055, 19889, 36110, 39778, 99445, 198890, 457447, 914894, 2287235, 3122573, 4574470, 6245146, 15612865, 31225730, 71819179, 143638358, 359095895, 718191790]

約数ペア:

[(1, 718191790), (2, 359095895), (5, 143638358), (10, 71819179), (23, 31225730), (46, 15612865), (115, 6245146), (157, 4574470), (230, 3122573), (314, 2287235), (785, 914894), (1570, 457447), (3611, 198890), (7222, 99445), (18055, 39778), (19889, 36110)]