21306416

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{977}}^1$

素因数の和:1061

約数の個数: 40

約数和(自身を含む): 43657920

約数和(自身を除く): 22351504

約数列:

[1, 2, 4, 8, 16, 29, 47, 58, 94, 116, 188, 232, 376, 464, 752, 977, 1363, 1954, 2726, 3908, 5452, 7816, 10904, 15632, 21808, 28333, 45919, 56666, 91838, 113332, 183676, 226664, 367352, 453328, 734704, 1331651, 2663302, 5326604, 10653208, 21306416]

約数ペア:

[(1, 21306416), (2, 10653208), (4, 5326604), (8, 2663302), (16, 1331651), (29, 734704), (47, 453328), (58, 367352), (94, 226664), (116, 183676), (188, 113332), (232, 91838), (376, 56666), (464, 45919), (752, 28333), (977, 21808), (1363, 15632), (1954, 10904), (2726, 7816), (3908, 5452)]