291227240

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{52379}}^1$

素因数の和:52529

約数の個数: 32

約数和(自身を含む): 659988000

約数和(自身を除く): 368760760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 52379, 104758, 209516, 261895, 419032, 523790, 1047580, 2095160, 7280681, 14561362, 29122724, 36403405, 58245448, 72806810, 145613620, 291227240]

約数ペア:

[(1, 291227240), (2, 145613620), (4, 72806810), (5, 58245448), (8, 36403405), (10, 29122724), (20, 14561362), (40, 7280681), (139, 2095160), (278, 1047580), (556, 523790), (695, 419032), (1112, 261895), (1390, 209516), (2780, 104758), (5560, 52379)]