780290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:242

約数の個数: 32

約数和(自身を含む): 1638144

約数和(自身を除く): 857854

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 157, 314, 355, 497, 710, 785, 994, 1099, 1570, 2198, 2485, 4970, 5495, 10990, 11147, 22294, 55735, 78029, 111470, 156058, 390145, 780290]

約数ペア:

[(1, 780290), (2, 390145), (5, 156058), (7, 111470), (10, 78029), (14, 55735), (35, 22294), (70, 11147), (71, 10990), (142, 5495), (157, 4970), (314, 2485), (355, 2198), (497, 1570), (710, 1099), (785, 994)]