20992636

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 23036804

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 103, 116, 203, 206, 251, 406, 412, 502, 721, 812, 1004, 1442, 1757, 2884, 2987, 3514, 5974, 7028, 7279, 11948, 14558, 20909, 25853, 29116, 41818, 50953, 51706, 83636, 101906, 103412, 180971, 203812, 361942, 723884, 749737, 1499474, 2998948, 5248159, 10496318, 20992636]

約数ペア:

[(1, 20992636), (2, 10496318), (4, 5248159), (7, 2998948), (14, 1499474), (28, 749737), (29, 723884), (58, 361942), (103, 203812), (116, 180971), (203, 103412), (206, 101906), (251, 83636), (406, 51706), (412, 50953), (502, 41818), (721, 29116), (812, 25853), (1004, 20909), (1442, 14558), (1757, 11948), (2884, 7279), (2987, 7028), (3514, 5974)]