218971580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{2731}}^1$

素因数の和:2970

約数の個数: 48

約数和(自身を含む): 486514560

約数和(自身を除く): 267542980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 211, 380, 422, 844, 1055, 2110, 2731, 4009, 4220, 5462, 8018, 10924, 13655, 16036, 20045, 27310, 40090, 51889, 54620, 80180, 103778, 207556, 259445, 518890, 576241, 1037780, 1152482, 2304964, 2881205, 5762410, 10948579, 11524820, 21897158, 43794316, 54742895, 109485790, 218971580]

約数ペア:

[(1, 218971580), (2, 109485790), (4, 54742895), (5, 43794316), (10, 21897158), (19, 11524820), (20, 10948579), (38, 5762410), (76, 2881205), (95, 2304964), (190, 1152482), (211, 1037780), (380, 576241), (422, 518890), (844, 259445), (1055, 207556), (2110, 103778), (2731, 80180), (4009, 54620), (4220, 51889), (5462, 40090), (8018, 27310), (10924, 20045), (13655, 16036)]