20158208

素因数分解:

$2^8\times 7^2\times {\mathrm{1607}}^1$

素因数の和:1637

約数の個数: 54

約数和(自身を含む): 46836216

約数和(自身を除く): 26678008

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 256, 392, 448, 784, 896, 1568, 1607, 1792, 3136, 3214, 6272, 6428, 11249, 12544, 12856, 22498, 25712, 44996, 51424, 78743, 89992, 102848, 157486, 179984, 205696, 314972, 359968, 411392, 629944, 719936, 1259888, 1439872, 2519776, 2879744, 5039552, 10079104, 20158208]

約数ペア:

[(1, 20158208), (2, 10079104), (4, 5039552), (7, 2879744), (8, 2519776), (14, 1439872), (16, 1259888), (28, 719936), (32, 629944), (49, 411392), (56, 359968), (64, 314972), (98, 205696), (112, 179984), (128, 157486), (196, 102848), (224, 89992), (256, 78743), (392, 51424), (448, 44996), (784, 25712), (896, 22498), (1568, 12856), (1607, 12544), (1792, 11249), (3136, 6428), (3214, 6272)]