20713917

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 34309440

約数和(自身を除く): 13595523

約数列:

[1, 3, 7, 21, 29, 43, 49, 87, 113, 129, 147, 203, 301, 339, 609, 791, 903, 1247, 1421, 2107, 2373, 3277, 3741, 4263, 4859, 5537, 6321, 8729, 9831, 14577, 16611, 22939, 26187, 34013, 61103, 68817, 102039, 140911, 160573, 183309, 238091, 422733, 481719, 714273, 986377, 2959131, 6904639, 20713917]

約数ペア:

[(1, 20713917), (3, 6904639), (7, 2959131), (21, 986377), (29, 714273), (43, 481719), (49, 422733), (87, 238091), (113, 183309), (129, 160573), (147, 140911), (203, 102039), (301, 68817), (339, 61103), (609, 34013), (791, 26187), (903, 22939), (1247, 16611), (1421, 14577), (2107, 9831), (2373, 8729), (3277, 6321), (3741, 5537), (4263, 4859)]