19404100

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{3181}}^1$

素因数の和:3256

約数の個数: 36

約数和(自身を含む): 42810628

約数和(自身を除く): 23406528

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 244, 305, 610, 1220, 1525, 3050, 3181, 6100, 6362, 12724, 15905, 31810, 63620, 79525, 159050, 194041, 318100, 388082, 776164, 970205, 1940410, 3880820, 4851025, 9702050, 19404100]

約数ペア:

[(1, 19404100), (2, 9702050), (4, 4851025), (5, 3880820), (10, 1940410), (20, 970205), (25, 776164), (50, 388082), (61, 318100), (100, 194041), (122, 159050), (244, 79525), (305, 63620), (610, 31810), (1220, 15905), (1525, 12724), (3050, 6362), (3181, 6100)]