21977480

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11213}}^1$

素因数の和:11238

約数の個数: 48

約数和(自身を含む): 57527820

約数和(自身を除く): 35550340

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 11213, 22426, 44852, 56065, 78491, 89704, 112130, 156982, 224260, 313964, 392455, 448520, 549437, 627928, 784910, 1098874, 1569820, 2197748, 2747185, 3139640, 4395496, 5494370, 10988740, 21977480]

約数ペア:

[(1, 21977480), (2, 10988740), (4, 5494370), (5, 4395496), (7, 3139640), (8, 2747185), (10, 2197748), (14, 1569820), (20, 1098874), (28, 784910), (35, 627928), (40, 549437), (49, 448520), (56, 392455), (70, 313964), (98, 224260), (140, 156982), (196, 112130), (245, 89704), (280, 78491), (392, 56065), (490, 44852), (980, 22426), (1960, 11213)]