19887153

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{307}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 31460352

約数和(自身を除く): 11573199

約数列:

[1, 3, 11, 13, 33, 39, 143, 151, 307, 429, 453, 921, 1661, 1963, 3377, 3991, 4983, 5889, 10131, 11973, 21593, 43901, 46357, 64779, 131703, 139071, 509927, 602641, 1529781, 1807923, 6629051, 19887153]

約数ペア:

[(1, 19887153), (3, 6629051), (11, 1807923), (13, 1529781), (33, 602641), (39, 509927), (143, 139071), (151, 131703), (307, 64779), (429, 46357), (453, 43901), (921, 21593), (1661, 11973), (1963, 10131), (3377, 5889), (3991, 4983)]