21316904

素因数分解:

$2^3\times 7^1\times {\mathrm{347}}^1\times {\mathrm{1097}}^1$

素因数の和:1457

約数の個数: 32

約数和(自身を含む): 45852480

約数和(自身を除く): 24535576

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 347, 694, 1097, 1388, 2194, 2429, 2776, 4388, 4858, 7679, 8776, 9716, 15358, 19432, 30716, 61432, 380659, 761318, 1522636, 2664613, 3045272, 5329226, 10658452, 21316904]

約数ペア:

[(1, 21316904), (2, 10658452), (4, 5329226), (7, 3045272), (8, 2664613), (14, 1522636), (28, 761318), (56, 380659), (347, 61432), (694, 30716), (1097, 19432), (1388, 15358), (2194, 9716), (2429, 8776), (2776, 7679), (4388, 4858)]