278328920

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{25867}}^1$

素因数の和:26147

約数の個数: 32

約数和(自身を含む): 628592400

約数和(自身を除く): 350263480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2690, 5380, 10760, 25867, 51734, 103468, 129335, 206936, 258670, 517340, 1034680, 6958223, 13916446, 27832892, 34791115, 55665784, 69582230, 139164460, 278328920]

約数ペア:

[(1, 278328920), (2, 139164460), (4, 69582230), (5, 55665784), (8, 34791115), (10, 27832892), (20, 13916446), (40, 6958223), (269, 1034680), (538, 517340), (1076, 258670), (1345, 206936), (2152, 129335), (2690, 103468), (5380, 51734), (10760, 25867)]