49990390

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1\times {\mathrm{389}}^1$

素因数の和:648

約数の個数: 32

約数和(自身を含む): 91990080

約数和(自身を除く): 41999690

約数列:

[1, 2, 5, 10, 71, 142, 181, 355, 362, 389, 710, 778, 905, 1810, 1945, 3890, 12851, 25702, 27619, 55238, 64255, 70409, 128510, 138095, 140818, 276190, 352045, 704090, 4999039, 9998078, 24995195, 49990390]

約数ペア:

[(1, 49990390), (2, 24995195), (5, 9998078), (10, 4999039), (71, 704090), (142, 352045), (181, 276190), (355, 140818), (362, 138095), (389, 128510), (710, 70409), (778, 64255), (905, 55238), (1810, 27619), (1945, 25702), (3890, 12851)]