389780360

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{314339}}^1$

素因数の和:314381

約数の個数: 32

約数和(自身を含む): 905299200

約数和(自身を除く): 515518840

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 314339, 628678, 1257356, 1571695, 2514712, 3143390, 6286780, 9744509, 12573560, 19489018, 38978036, 48722545, 77956072, 97445090, 194890180, 389780360]

約数ペア:

[(1, 389780360), (2, 194890180), (4, 97445090), (5, 77956072), (8, 48722545), (10, 38978036), (20, 19489018), (31, 12573560), (40, 9744509), (62, 6286780), (124, 3143390), (155, 2514712), (248, 1571695), (310, 1257356), (620, 628678), (1240, 314339)]