21330430

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{8431}}^1$

素因数の和:8472

約数の個数: 32

約数和(自身を含む): 43711488

約数和(自身を除く): 22381058

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 1265, 2530, 8431, 16862, 42155, 84310, 92741, 185482, 193913, 387826, 463705, 927410, 969565, 1939130, 2133043, 4266086, 10665215, 21330430]

約数ペア:

[(1, 21330430), (2, 10665215), (5, 4266086), (10, 2133043), (11, 1939130), (22, 969565), (23, 927410), (46, 463705), (55, 387826), (110, 193913), (115, 185482), (230, 92741), (253, 84310), (506, 42155), (1265, 16862), (2530, 8431)]