21288878

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{433}}^1$

素因数の和:540

約数の個数: 32

約数和(自身を含む): 36164352

約数和(自身を除く): 14875474

約数列:

[1, 2, 13, 26, 31, 61, 62, 122, 403, 433, 793, 806, 866, 1586, 1891, 3782, 5629, 11258, 13423, 24583, 26413, 26846, 49166, 52826, 174499, 343369, 348998, 686738, 818803, 1637606, 10644439, 21288878]

約数ペア:

[(1, 21288878), (2, 10644439), (13, 1637606), (26, 818803), (31, 686738), (61, 348998), (62, 343369), (122, 174499), (403, 52826), (433, 49166), (793, 26846), (806, 26413), (866, 24583), (1586, 13423), (1891, 11258), (3782, 5629)]