12990340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{431}}^1$

素因数の和:588

約数の個数: 48

約数和(自身を含む): 30046464

約数和(自身を除く): 17056124

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 137, 220, 274, 431, 548, 685, 862, 1370, 1507, 1724, 2155, 2740, 3014, 4310, 4741, 6028, 7535, 8620, 9482, 15070, 18964, 23705, 30140, 47410, 59047, 94820, 118094, 236188, 295235, 590470, 649517, 1180940, 1299034, 2598068, 3247585, 6495170, 12990340]

約数ペア:

[(1, 12990340), (2, 6495170), (4, 3247585), (5, 2598068), (10, 1299034), (11, 1180940), (20, 649517), (22, 590470), (44, 295235), (55, 236188), (110, 118094), (137, 94820), (220, 59047), (274, 47410), (431, 30140), (548, 23705), (685, 18964), (862, 15070), (1370, 9482), (1507, 8620), (1724, 7535), (2155, 6028), (2740, 4741), (3014, 4310)]