31616780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{439}}^1$

素因数の和:738

約数の個数: 48

約数和(自身を含む): 71924160

約数和(自身を除く): 40307380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 277, 439, 554, 878, 1108, 1385, 1756, 2195, 2770, 3601, 4390, 5540, 5707, 7202, 8780, 11414, 14404, 18005, 22828, 28535, 36010, 57070, 72020, 114140, 121603, 243206, 486412, 608015, 1216030, 1580839, 2432060, 3161678, 6323356, 7904195, 15808390, 31616780]

約数ペア:

[(1, 31616780), (2, 15808390), (4, 7904195), (5, 6323356), (10, 3161678), (13, 2432060), (20, 1580839), (26, 1216030), (52, 608015), (65, 486412), (130, 243206), (260, 121603), (277, 114140), (439, 72020), (554, 57070), (878, 36010), (1108, 28535), (1385, 22828), (1756, 18005), (2195, 14404), (2770, 11414), (3601, 8780), (4390, 7202), (5540, 5707)]