12786880

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1289}}^1$

素因数の和:1337

約数の個数: 56

約数和(自身を含む): 31455360

約数和(自身を除く): 18668480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1289, 1984, 2480, 2578, 4960, 5156, 6445, 9920, 10312, 12890, 20624, 25780, 39959, 41248, 51560, 79918, 82496, 103120, 159836, 199795, 206240, 319672, 399590, 412480, 639344, 799180, 1278688, 1598360, 2557376, 3196720, 6393440, 12786880]

約数ペア:

[(1, 12786880), (2, 6393440), (4, 3196720), (5, 2557376), (8, 1598360), (10, 1278688), (16, 799180), (20, 639344), (31, 412480), (32, 399590), (40, 319672), (62, 206240), (64, 199795), (80, 159836), (124, 103120), (155, 82496), (160, 79918), (248, 51560), (310, 41248), (320, 39959), (496, 25780), (620, 20624), (992, 12890), (1240, 10312), (1289, 9920), (1984, 6445), (2480, 5156), (2578, 4960)]