19809916

素因数分解:

$2^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{1907}}^1$

素因数の和:1978

約数の個数: 36

約数和(自身を含む): 41109768

約数和(自身を除く): 21299852

約数列:

[1, 2, 4, 7, 14, 28, 49, 53, 98, 106, 196, 212, 371, 742, 1484, 1907, 2597, 3814, 5194, 7628, 10388, 13349, 26698, 53396, 93443, 101071, 186886, 202142, 373772, 404284, 707497, 1414994, 2829988, 4952479, 9904958, 19809916]

約数ペア:

[(1, 19809916), (2, 9904958), (4, 4952479), (7, 2829988), (14, 1414994), (28, 707497), (49, 404284), (53, 373772), (98, 202142), (106, 186886), (196, 101071), (212, 93443), (371, 53396), (742, 26698), (1484, 13349), (1907, 10388), (2597, 7628), (3814, 5194)]