19808656

素因数分解:

$2^4\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1187}}^1$

素因数の和:1351

約数の個数: 40

約数和(自身を含む): 44193600

約数和(自身を除く): 24384944

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 149, 298, 596, 1043, 1187, 1192, 2086, 2374, 2384, 4172, 4748, 8309, 8344, 9496, 16618, 16688, 18992, 33236, 66472, 132944, 176863, 353726, 707452, 1238041, 1414904, 2476082, 2829808, 4952164, 9904328, 19808656]

約数ペア:

[(1, 19808656), (2, 9904328), (4, 4952164), (7, 2829808), (8, 2476082), (14, 1414904), (16, 1238041), (28, 707452), (56, 353726), (112, 176863), (149, 132944), (298, 66472), (596, 33236), (1043, 18992), (1187, 16688), (1192, 16618), (2086, 9496), (2374, 8344), (2384, 8309), (4172, 4748)]