221271568

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103981}}^1$

素因数の和:104015

約数の個数: 40

約数和(自身を含む): 515750720

約数和(自身を除く): 294479152

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 103981, 207962, 415924, 727867, 831848, 1455734, 1663696, 1975639, 2911468, 3951278, 5822936, 7902556, 11645872, 13829473, 15805112, 27658946, 31610224, 55317892, 110635784, 221271568]

約数ペア:

[(1, 221271568), (2, 110635784), (4, 55317892), (7, 31610224), (8, 27658946), (14, 15805112), (16, 13829473), (19, 11645872), (28, 7902556), (38, 5822936), (56, 3951278), (76, 2911468), (112, 1975639), (133, 1663696), (152, 1455734), (266, 831848), (304, 727867), (532, 415924), (1064, 207962), (2128, 103981)]