51031990

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1\times {\mathrm{311}}^1$

素因数の和:648

約数の個数: 32

約数和(自身を含む): 94011840

約数和(自身を除く): 42979850

約数列:

[1, 2, 5, 10, 61, 122, 269, 305, 311, 538, 610, 622, 1345, 1555, 2690, 3110, 16409, 18971, 32818, 37942, 82045, 83659, 94855, 164090, 167318, 189710, 418295, 836590, 5103199, 10206398, 25515995, 51031990]

約数ペア:

[(1, 51031990), (2, 25515995), (5, 10206398), (10, 5103199), (61, 836590), (122, 418295), (269, 189710), (305, 167318), (311, 164090), (538, 94855), (610, 83659), (622, 82045), (1345, 37942), (1555, 32818), (2690, 18971), (3110, 16409)]