79880180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{6781}}^1$

素因数の和:6840

約数の個数: 48

約数和(自身を含む): 182300160

約数和(自身を除く): 102419980

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 2356, 2945, 5890, 6781, 11780, 13562, 27124, 33905, 67810, 128839, 135620, 210211, 257678, 420422, 515356, 644195, 840844, 1051055, 1288390, 2102110, 2576780, 3994009, 4204220, 7988018, 15976036, 19970045, 39940090, 79880180]

約数ペア:

[(1, 79880180), (2, 39940090), (4, 19970045), (5, 15976036), (10, 7988018), (19, 4204220), (20, 3994009), (31, 2576780), (38, 2102110), (62, 1288390), (76, 1051055), (95, 840844), (124, 644195), (155, 515356), (190, 420422), (310, 257678), (380, 210211), (589, 135620), (620, 128839), (1178, 67810), (2356, 33905), (2945, 27124), (5890, 13562), (6781, 11780)]