21664390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{8563}}^1$

素因数の和:8604

約数の個数: 32

約数和(自身を含む): 44395776

約数和(自身を除く): 22731386

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 1265, 2530, 8563, 17126, 42815, 85630, 94193, 188386, 196949, 393898, 470965, 941930, 984745, 1969490, 2166439, 4332878, 10832195, 21664390]

約数ペア:

[(1, 21664390), (2, 10832195), (5, 4332878), (10, 2166439), (11, 1969490), (22, 984745), (23, 941930), (46, 470965), (55, 393898), (110, 196949), (115, 188386), (230, 94193), (253, 85630), (506, 42815), (1265, 17126), (2530, 8563)]