21438224

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{293}}^1$

素因数の和:587

約数の個数: 40

約数和(自身を含む): 44294040

約数和(自身を除く): 22855816

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 269, 272, 293, 538, 586, 1076, 1172, 2152, 2344, 4304, 4573, 4688, 4981, 9146, 9962, 18292, 19924, 36584, 39848, 73168, 78817, 79696, 157634, 315268, 630536, 1261072, 1339889, 2679778, 5359556, 10719112, 21438224]

約数ペア:

[(1, 21438224), (2, 10719112), (4, 5359556), (8, 2679778), (16, 1339889), (17, 1261072), (34, 630536), (68, 315268), (136, 157634), (269, 79696), (272, 78817), (293, 73168), (538, 39848), (586, 36584), (1076, 19924), (1172, 18292), (2152, 9962), (2344, 9146), (4304, 4981), (4573, 4688)]