31380760

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{4813}}^1$

素因数の和:4987

約数の個数: 32

約数和(自身を含む): 71054640

約数和(自身を除く): 39673880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 4813, 6520, 9626, 19252, 24065, 38504, 48130, 96260, 192520, 784519, 1569038, 3138076, 3922595, 6276152, 7845190, 15690380, 31380760]

約数ペア:

[(1, 31380760), (2, 15690380), (4, 7845190), (5, 6276152), (8, 3922595), (10, 3138076), (20, 1569038), (40, 784519), (163, 192520), (326, 96260), (652, 48130), (815, 38504), (1304, 24065), (1630, 19252), (3260, 9626), (4813, 6520)]