21211316

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{3491}}^1$

素因数の和:3540

約数の個数: 36

約数和(自身を含む): 44585856

約数和(自身を除く): 23374540

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 196, 217, 434, 868, 1519, 3038, 3491, 6076, 6982, 13964, 24437, 48874, 97748, 108221, 171059, 216442, 342118, 432884, 684236, 757547, 1515094, 3030188, 5302829, 10605658, 21211316]

約数ペア:

[(1, 21211316), (2, 10605658), (4, 5302829), (7, 3030188), (14, 1515094), (28, 757547), (31, 684236), (49, 432884), (62, 342118), (98, 216442), (124, 171059), (196, 108221), (217, 97748), (434, 48874), (868, 24437), (1519, 13964), (3038, 6982), (3491, 6076)]