21718956

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{859}}^1$

素因数の和:923

約数の個数: 72

約数和(自身を含む): 60392640

約数和(自身を除く): 38673684

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 43, 49, 84, 86, 98, 129, 147, 172, 196, 258, 294, 301, 516, 588, 602, 859, 903, 1204, 1718, 1806, 2107, 2577, 3436, 3612, 4214, 5154, 6013, 6321, 8428, 10308, 12026, 12642, 18039, 24052, 25284, 36078, 36937, 42091, 72156, 73874, 84182, 110811, 126273, 147748, 168364, 221622, 252546, 258559, 443244, 505092, 517118, 775677, 1034236, 1551354, 1809913, 3102708, 3619826, 5429739, 7239652, 10859478, 21718956]

約数ペア:

[(1, 21718956), (2, 10859478), (3, 7239652), (4, 5429739), (6, 3619826), (7, 3102708), (12, 1809913), (14, 1551354), (21, 1034236), (28, 775677), (42, 517118), (43, 505092), (49, 443244), (84, 258559), (86, 252546), (98, 221622), (129, 168364), (147, 147748), (172, 126273), (196, 110811), (258, 84182), (294, 73874), (301, 72156), (516, 42091), (588, 36937), (602, 36078), (859, 25284), (903, 24052), (1204, 18039), (1718, 12642), (1806, 12026), (2107, 10308), (2577, 8428), (3436, 6321), (3612, 6013), (4214, 5154)]