19919872

素因数分解:

$2^{10}\times 7^2\times {\mathrm{397}}^1$

素因数の和:431

約数の個数: 66

約数和(自身を含む): 46438242

約数和(自身を除く): 26518370

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 256, 392, 397, 448, 512, 784, 794, 896, 1024, 1568, 1588, 1792, 2779, 3136, 3176, 3584, 5558, 6272, 6352, 7168, 11116, 12544, 12704, 19453, 22232, 25088, 25408, 38906, 44464, 50176, 50816, 77812, 88928, 101632, 155624, 177856, 203264, 311248, 355712, 406528, 622496, 711424, 1244992, 1422848, 2489984, 2845696, 4979968, 9959936, 19919872]

約数ペア:

[(1, 19919872), (2, 9959936), (4, 4979968), (7, 2845696), (8, 2489984), (14, 1422848), (16, 1244992), (28, 711424), (32, 622496), (49, 406528), (56, 355712), (64, 311248), (98, 203264), (112, 177856), (128, 155624), (196, 101632), (224, 88928), (256, 77812), (392, 50816), (397, 50176), (448, 44464), (512, 38906), (784, 25408), (794, 25088), (896, 22232), (1024, 19453), (1568, 12704), (1588, 12544), (1792, 11116), (2779, 7168), (3136, 6352), (3176, 6272), (3584, 5558)]