21421330

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43717}}^1$

素因数の和:43738

約数の個数: 24

約数和(自身を含む): 44854668

約数和(自身を除く): 23433338

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 43717, 87434, 218585, 306019, 437170, 612038, 1530095, 2142133, 3060190, 4284266, 10710665, 21421330]

約数ペア:

[(1, 21421330), (2, 10710665), (5, 4284266), (7, 3060190), (10, 2142133), (14, 1530095), (35, 612038), (49, 437170), (70, 306019), (98, 218585), (245, 87434), (490, 43717)]