21193956

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2713}}^1$

素因数の和:2761

約数の個数: 72

約数和(自身を含む): 63225344

約数和(自身を除く): 42031388

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 31, 36, 42, 62, 63, 84, 93, 124, 126, 186, 217, 252, 279, 372, 434, 558, 651, 868, 1116, 1302, 1953, 2604, 2713, 3906, 5426, 7812, 8139, 10852, 16278, 18991, 24417, 32556, 37982, 48834, 56973, 75964, 84103, 97668, 113946, 168206, 170919, 227892, 252309, 336412, 341838, 504618, 588721, 683676, 756927, 1009236, 1177442, 1513854, 1766163, 2354884, 3027708, 3532326, 5298489, 7064652, 10596978, 21193956]

約数ペア:

[(1, 21193956), (2, 10596978), (3, 7064652), (4, 5298489), (6, 3532326), (7, 3027708), (9, 2354884), (12, 1766163), (14, 1513854), (18, 1177442), (21, 1009236), (28, 756927), (31, 683676), (36, 588721), (42, 504618), (62, 341838), (63, 336412), (84, 252309), (93, 227892), (124, 170919), (126, 168206), (186, 113946), (217, 97668), (252, 84103), (279, 75964), (372, 56973), (434, 48834), (558, 37982), (651, 32556), (868, 24417), (1116, 18991), (1302, 16278), (1953, 10852), (2604, 8139), (2713, 7812), (3906, 5426)]