389920790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{179687}}^1$

素因数の和:179732

約数の個数: 32

約数和(自身を含む): 828002304

約数和(自身を除く): 438081514

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170, 179687, 359374, 898435, 1257809, 1796870, 2515618, 5570297, 6289045, 11140594, 12578090, 27851485, 38992079, 55702970, 77984158, 194960395, 389920790]

約数ペア:

[(1, 389920790), (2, 194960395), (5, 77984158), (7, 55702970), (10, 38992079), (14, 27851485), (31, 12578090), (35, 11140594), (62, 6289045), (70, 5570297), (155, 2515618), (217, 1796870), (310, 1257809), (434, 898435), (1085, 359374), (2170, 179687)]