28001556

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2281}}^1$

素因数の和:2333

約数の個数: 72

約数和(自身を含む): 79742208

約数和(自身を除く): 51740652

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 31, 33, 36, 44, 62, 66, 93, 99, 124, 132, 186, 198, 279, 341, 372, 396, 558, 682, 1023, 1116, 1364, 2046, 2281, 3069, 4092, 4562, 6138, 6843, 9124, 12276, 13686, 20529, 25091, 27372, 41058, 50182, 70711, 75273, 82116, 100364, 141422, 150546, 212133, 225819, 282844, 301092, 424266, 451638, 636399, 777821, 848532, 903276, 1272798, 1555642, 2333463, 2545596, 3111284, 4666926, 7000389, 9333852, 14000778, 28001556]

約数ペア:

[(1, 28001556), (2, 14000778), (3, 9333852), (4, 7000389), (6, 4666926), (9, 3111284), (11, 2545596), (12, 2333463), (18, 1555642), (22, 1272798), (31, 903276), (33, 848532), (36, 777821), (44, 636399), (62, 451638), (66, 424266), (93, 301092), (99, 282844), (124, 225819), (132, 212133), (186, 150546), (198, 141422), (279, 100364), (341, 82116), (372, 75273), (396, 70711), (558, 50182), (682, 41058), (1023, 27372), (1116, 25091), (1364, 20529), (2046, 13686), (2281, 12276), (3069, 9124), (4092, 6843), (4562, 6138)]