20454784

素因数分解:

$2^7\times 7^1\times {\mathrm{37}}^1\times {\mathrm{617}}^1$

素因数の和:675

約数の個数: 64

約数和(自身を含む): 47907360

約数和(自身を除く): 27452576

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 37, 56, 64, 74, 112, 128, 148, 224, 259, 296, 448, 518, 592, 617, 896, 1036, 1184, 1234, 2072, 2368, 2468, 4144, 4319, 4736, 4936, 8288, 8638, 9872, 16576, 17276, 19744, 22829, 33152, 34552, 39488, 45658, 69104, 78976, 91316, 138208, 159803, 182632, 276416, 319606, 365264, 552832, 639212, 730528, 1278424, 1461056, 2556848, 2922112, 5113696, 10227392, 20454784]

約数ペア:

[(1, 20454784), (2, 10227392), (4, 5113696), (7, 2922112), (8, 2556848), (14, 1461056), (16, 1278424), (28, 730528), (32, 639212), (37, 552832), (56, 365264), (64, 319606), (74, 276416), (112, 182632), (128, 159803), (148, 138208), (224, 91316), (259, 78976), (296, 69104), (448, 45658), (518, 39488), (592, 34552), (617, 33152), (896, 22829), (1036, 19744), (1184, 17276), (1234, 16576), (2072, 9872), (2368, 8638), (2468, 8288), (4144, 4936), (4319, 4736)]