15561988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{829}}^1$

素因数の和:884

約数の個数: 36

約数和(自身を含む): 30990540

約数和(自身を除く): 15428552

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 361, 494, 722, 829, 988, 1444, 1658, 3316, 4693, 9386, 10777, 15751, 18772, 21554, 31502, 43108, 63004, 204763, 299269, 409526, 598538, 819052, 1197076, 3890497, 7780994, 15561988]

約数ペア:

[(1, 15561988), (2, 7780994), (4, 3890497), (13, 1197076), (19, 819052), (26, 598538), (38, 409526), (52, 299269), (76, 204763), (247, 63004), (361, 43108), (494, 31502), (722, 21554), (829, 18772), (988, 15751), (1444, 10777), (1658, 9386), (3316, 4693)]