21394674

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{127}}^1\times {\mathrm{191}}^1$

素因数の和:340

約数の個数: 72

約数和(自身を含む): 54632448

約数和(自身を除く): 33237774

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 127, 147, 191, 254, 294, 381, 382, 441, 573, 762, 882, 889, 1143, 1146, 1337, 1719, 1778, 2286, 2667, 2674, 3438, 4011, 5334, 6223, 8001, 8022, 9359, 12033, 12446, 16002, 18669, 18718, 24066, 24257, 28077, 37338, 48514, 56007, 56154, 72771, 84231, 112014, 145542, 168462, 169799, 218313, 339598, 436626, 509397, 1018794, 1188593, 1528191, 2377186, 3056382, 3565779, 7131558, 10697337, 21394674]

約数ペア:

[(1, 21394674), (2, 10697337), (3, 7131558), (6, 3565779), (7, 3056382), (9, 2377186), (14, 1528191), (18, 1188593), (21, 1018794), (42, 509397), (49, 436626), (63, 339598), (98, 218313), (126, 169799), (127, 168462), (147, 145542), (191, 112014), (254, 84231), (294, 72771), (381, 56154), (382, 56007), (441, 48514), (573, 37338), (762, 28077), (882, 24257), (889, 24066), (1143, 18718), (1146, 18669), (1337, 16002), (1719, 12446), (1778, 12033), (2286, 9359), (2667, 8022), (2674, 8001), (3438, 6223), (4011, 5334)]