278380616

素因数分解:

$2^3\times {\mathrm{107}}^1\times {\mathrm{401}}^1\times {\mathrm{811}}^1$

素因数の和:1325

約数の個数: 32

約数和(自身を含む): 528806880

約数和(自身を除く): 250426264

約数列:

[1, 2, 4, 8, 107, 214, 401, 428, 802, 811, 856, 1604, 1622, 3208, 3244, 6488, 42907, 85814, 86777, 171628, 173554, 325211, 343256, 347108, 650422, 694216, 1300844, 2601688, 34797577, 69595154, 139190308, 278380616]

約数ペア:

[(1, 278380616), (2, 139190308), (4, 69595154), (8, 34797577), (107, 2601688), (214, 1300844), (401, 694216), (428, 650422), (802, 347108), (811, 343256), (856, 325211), (1604, 173554), (1622, 171628), (3208, 86777), (3244, 85814), (6488, 42907)]