28266790

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{311}}^1$

素因数の和:528

約数の個数: 32

約数和(自身を含む): 52228800

約数和(自身を除く): 23962010

約数列:

[1, 2, 5, 10, 61, 122, 149, 298, 305, 311, 610, 622, 745, 1490, 1555, 3110, 9089, 18178, 18971, 37942, 45445, 46339, 90890, 92678, 94855, 189710, 231695, 463390, 2826679, 5653358, 14133395, 28266790]

約数ペア:

[(1, 28266790), (2, 14133395), (5, 5653358), (10, 2826679), (61, 463390), (122, 231695), (149, 189710), (298, 94855), (305, 92678), (311, 90890), (610, 46339), (622, 45445), (745, 37942), (1490, 18971), (1555, 18178), (3110, 9089)]