20729996

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 43122240

約数和(自身を除く): 22392244

約数列:

[1, 2, 4, 7, 14, 28, 53, 61, 106, 122, 212, 229, 244, 371, 427, 458, 742, 854, 916, 1484, 1603, 1708, 3206, 3233, 6412, 6466, 12137, 12932, 13969, 22631, 24274, 27938, 45262, 48548, 55876, 84959, 90524, 97783, 169918, 195566, 339836, 391132, 740357, 1480714, 2961428, 5182499, 10364998, 20729996]

約数ペア:

[(1, 20729996), (2, 10364998), (4, 5182499), (7, 2961428), (14, 1480714), (28, 740357), (53, 391132), (61, 339836), (106, 195566), (122, 169918), (212, 97783), (229, 90524), (244, 84959), (371, 55876), (427, 48548), (458, 45262), (742, 27938), (854, 24274), (916, 22631), (1484, 13969), (1603, 12932), (1708, 12137), (3206, 6466), (3233, 6412)]