21962248

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{353}}^1$

素因数の和:478

約数の個数: 64

約数和(自身を含む): 51995520

約数和(自身を除く): 30033272

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 101, 154, 202, 308, 353, 404, 616, 706, 707, 808, 1111, 1412, 1414, 2222, 2471, 2824, 2828, 3883, 4444, 4942, 5656, 7766, 7777, 8888, 9884, 15532, 15554, 19768, 27181, 31064, 31108, 35653, 54362, 62216, 71306, 108724, 142612, 217448, 249571, 285224, 392183, 499142, 784366, 998284, 1568732, 1996568, 2745281, 3137464, 5490562, 10981124, 21962248]

約数ペア:

[(1, 21962248), (2, 10981124), (4, 5490562), (7, 3137464), (8, 2745281), (11, 1996568), (14, 1568732), (22, 998284), (28, 784366), (44, 499142), (56, 392183), (77, 285224), (88, 249571), (101, 217448), (154, 142612), (202, 108724), (308, 71306), (353, 62216), (404, 54362), (616, 35653), (706, 31108), (707, 31064), (808, 27181), (1111, 19768), (1412, 15554), (1414, 15532), (2222, 9884), (2471, 8888), (2824, 7777), (2828, 7766), (3883, 5656), (4444, 4942)]