28678210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{137}}^1\times {\mathrm{173}}^1$

素因数の和:339

約数の個数: 48

約数和(自身を含む): 57484728

約数和(自身を除く): 28806518

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 137, 173, 242, 274, 346, 605, 685, 865, 1210, 1370, 1507, 1730, 1903, 3014, 3806, 7535, 9515, 15070, 16577, 19030, 20933, 23701, 33154, 41866, 47402, 82885, 104665, 118505, 165770, 209330, 237010, 260711, 521422, 1303555, 2607110, 2867821, 5735642, 14339105, 28678210]

約数ペア:

[(1, 28678210), (2, 14339105), (5, 5735642), (10, 2867821), (11, 2607110), (22, 1303555), (55, 521422), (110, 260711), (121, 237010), (137, 209330), (173, 165770), (242, 118505), (274, 104665), (346, 82885), (605, 47402), (685, 41866), (865, 33154), (1210, 23701), (1370, 20933), (1507, 19030), (1730, 16577), (1903, 15070), (3014, 9515), (3806, 7535)]