9991190

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1489}}^1$

素因数の和:1568

約数の個数: 32

約数和(自身を含む): 19954080

約数和(自身を除く): 9962890

約数列:

[1, 2, 5, 10, 11, 22, 55, 61, 110, 122, 305, 610, 671, 1342, 1489, 2978, 3355, 6710, 7445, 14890, 16379, 32758, 81895, 90829, 163790, 181658, 454145, 908290, 999119, 1998238, 4995595, 9991190]

約数ペア:

[(1, 9991190), (2, 4995595), (5, 1998238), (10, 999119), (11, 908290), (22, 454145), (55, 181658), (61, 163790), (110, 90829), (122, 81895), (305, 32758), (610, 16379), (671, 14890), (1342, 7445), (1489, 6710), (2978, 3355)]