278839640

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{240379}}^1$

素因数の和:240419

約数の個数: 32

約数和(自身を含む): 649026000

約数和(自身を除く): 370186360

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 240379, 480758, 961516, 1201895, 1923032, 2403790, 4807580, 6970991, 9615160, 13941982, 27883964, 34854955, 55767928, 69709910, 139419820, 278839640]

約数ペア:

[(1, 278839640), (2, 139419820), (4, 69709910), (5, 55767928), (8, 34854955), (10, 27883964), (20, 13941982), (29, 9615160), (40, 6970991), (58, 4807580), (116, 2403790), (145, 1923032), (232, 1201895), (290, 961516), (580, 480758), (1160, 240379)]