19908812

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1747}}^1$

素因数の和:1806

約数の個数: 48

約数和(自身を含む): 44636928

約数和(自身を除く): 24728116

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 37, 44, 74, 77, 148, 154, 259, 308, 407, 518, 814, 1036, 1628, 1747, 2849, 3494, 5698, 6988, 11396, 12229, 19217, 24458, 38434, 48916, 64639, 76868, 129278, 134519, 258556, 269038, 452473, 538076, 711029, 904946, 1422058, 1809892, 2844116, 4977203, 9954406, 19908812]

約数ペア:

[(1, 19908812), (2, 9954406), (4, 4977203), (7, 2844116), (11, 1809892), (14, 1422058), (22, 904946), (28, 711029), (37, 538076), (44, 452473), (74, 269038), (77, 258556), (148, 134519), (154, 129278), (259, 76868), (308, 64639), (407, 48916), (518, 38434), (814, 24458), (1036, 19217), (1628, 12229), (1747, 11396), (2849, 6988), (3494, 5698)]