20662516

素因数分解:

$2^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2243}}^1$

素因数の和:2308

約数の個数: 36

約数和(自身を含む): 42977088

約数和(自身を除く): 22314572

約数列:

[1, 2, 4, 7, 14, 28, 47, 49, 94, 98, 188, 196, 329, 658, 1316, 2243, 2303, 4486, 4606, 8972, 9212, 15701, 31402, 62804, 105421, 109907, 210842, 219814, 421684, 439628, 737947, 1475894, 2951788, 5165629, 10331258, 20662516]

約数ペア:

[(1, 20662516), (2, 10331258), (4, 5165629), (7, 2951788), (14, 1475894), (28, 737947), (47, 439628), (49, 421684), (94, 219814), (98, 210842), (188, 109907), (196, 105421), (329, 62804), (658, 31402), (1316, 15701), (2243, 9212), (2303, 8972), (4486, 4606)]