19696900

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{3229}}^1$

素因数の和:3304

約数の個数: 36

約数和(自身を含む): 43456420

約数和(自身を除く): 23759520

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 244, 305, 610, 1220, 1525, 3050, 3229, 6100, 6458, 12916, 16145, 32290, 64580, 80725, 161450, 196969, 322900, 393938, 787876, 984845, 1969690, 3939380, 4924225, 9848450, 19696900]

約数ペア:

[(1, 19696900), (2, 9848450), (4, 4924225), (5, 3939380), (10, 1969690), (20, 984845), (25, 787876), (50, 393938), (61, 322900), (100, 196969), (122, 161450), (244, 80725), (305, 64580), (610, 32290), (1220, 16145), (1525, 12916), (3050, 6458), (3229, 6100)]