20928544

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7187}}^1$

素因数の和:7217

約数の個数: 48

約数和(自身を含む): 50718528

約数和(自身を除く): 29789984

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7187, 14374, 28748, 50309, 57496, 93431, 100618, 114992, 186862, 201236, 229984, 373724, 402472, 654017, 747448, 804944, 1308034, 1494896, 1609888, 2616068, 2989792, 5232136, 10464272, 20928544]

約数ペア:

[(1, 20928544), (2, 10464272), (4, 5232136), (7, 2989792), (8, 2616068), (13, 1609888), (14, 1494896), (16, 1308034), (26, 804944), (28, 747448), (32, 654017), (52, 402472), (56, 373724), (91, 229984), (104, 201236), (112, 186862), (182, 114992), (208, 100618), (224, 93431), (364, 57496), (416, 50309), (728, 28748), (1456, 14374), (2912, 7187)]