19982848

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{1259}}^1$

素因数の和:1308

約数の個数: 40

約数和(自身を含む): 41247360

約数和(自身を除く): 21264512

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 992, 1259, 1984, 2518, 3968, 5036, 7936, 10072, 15872, 20144, 39029, 40288, 78058, 80576, 156116, 161152, 312232, 322304, 624464, 644608, 1248928, 2497856, 4995712, 9991424, 19982848]

約数ペア:

[(1, 19982848), (2, 9991424), (4, 4995712), (8, 2497856), (16, 1248928), (31, 644608), (32, 624464), (62, 322304), (64, 312232), (124, 161152), (128, 156116), (248, 80576), (256, 78058), (496, 40288), (512, 39029), (992, 20144), (1259, 15872), (1984, 10072), (2518, 7936), (3968, 5036)]