285428560

素因数分解:

$2^4\times 5^1\times {\mathrm{281}}^1\times {\mathrm{12697}}^1$

素因数の和:12991

約数の個数: 40

約数和(自身を含む): 666035496

約数和(自身を除く): 380606936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 281, 562, 1124, 1405, 2248, 2810, 4496, 5620, 11240, 12697, 22480, 25394, 50788, 63485, 101576, 126970, 203152, 253940, 507880, 1015760, 3567857, 7135714, 14271428, 17839285, 28542856, 35678570, 57085712, 71357140, 142714280, 285428560]

約数ペア:

[(1, 285428560), (2, 142714280), (4, 71357140), (5, 57085712), (8, 35678570), (10, 28542856), (16, 17839285), (20, 14271428), (40, 7135714), (80, 3567857), (281, 1015760), (562, 507880), (1124, 253940), (1405, 203152), (2248, 126970), (2810, 101576), (4496, 63485), (5620, 50788), (11240, 25394), (12697, 22480)]