21820190

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{44531}}^1$

素因数の和:44552

約数の個数: 24

約数和(自身を含む): 45689832

約数和(自身を除く): 23869642

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 44531, 89062, 222655, 311717, 445310, 623434, 1558585, 2182019, 3117170, 4364038, 10910095, 21820190]

約数ペア:

[(1, 21820190), (2, 10910095), (5, 4364038), (7, 3117170), (10, 2182019), (14, 1558585), (35, 623434), (49, 445310), (70, 311717), (98, 222655), (245, 89062), (490, 44531)]