81310860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{811}}^1$

素因数の和:1383

約数の個数: 72

約数和(自身を含む): 247390416

約数和(自身を除く): 166079556

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 557, 811, 1114, 1622, 1671, 2228, 2433, 2785, 3244, 3342, 4055, 4866, 5013, 5570, 6684, 7299, 8110, 8355, 9732, 10026, 11140, 12165, 14598, 16220, 16710, 20052, 24330, 25065, 29196, 33420, 36495, 48660, 50130, 72990, 100260, 145980, 451727, 903454, 1355181, 1806908, 2258635, 2710362, 4065543, 4517270, 5420724, 6775905, 8131086, 9034540, 13551810, 16262172, 20327715, 27103620, 40655430, 81310860]

約数ペア:

[(1, 81310860), (2, 40655430), (3, 27103620), (4, 20327715), (5, 16262172), (6, 13551810), (9, 9034540), (10, 8131086), (12, 6775905), (15, 5420724), (18, 4517270), (20, 4065543), (30, 2710362), (36, 2258635), (45, 1806908), (60, 1355181), (90, 903454), (180, 451727), (557, 145980), (811, 100260), (1114, 72990), (1622, 50130), (1671, 48660), (2228, 36495), (2433, 33420), (2785, 29196), (3244, 25065), (3342, 24330), (4055, 20052), (4866, 16710), (5013, 16220), (5570, 14598), (6684, 12165), (7299, 11140), (8110, 10026), (8355, 9732)]