78869750

素因数分解:

$2^1\times 5^3\times {\mathrm{389}}^1\times {\mathrm{811}}^1$

素因数の和:1217

約数の個数: 32

約数和(自身を含む): 148206240

約数和(自身を除く): 69336490

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 389, 778, 811, 1622, 1945, 3890, 4055, 8110, 9725, 19450, 20275, 40550, 48625, 97250, 101375, 202750, 315479, 630958, 1577395, 3154790, 7886975, 15773950, 39434875, 78869750]

約数ペア:

[(1, 78869750), (2, 39434875), (5, 15773950), (10, 7886975), (25, 3154790), (50, 1577395), (125, 630958), (250, 315479), (389, 202750), (778, 101375), (811, 97250), (1622, 48625), (1945, 40550), (3890, 20275), (4055, 19450), (8110, 9725)]