21813722

素因数分解:

$2^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:207

約数の個数: 48

約数和(自身を含む): 40075560

約数和(自身を除く): 18261838

約数列:

[1, 2, 7, 14, 41, 49, 61, 82, 89, 98, 122, 178, 287, 427, 574, 623, 854, 1246, 2009, 2501, 2989, 3649, 4018, 4361, 5002, 5429, 5978, 7298, 8722, 10858, 17507, 25543, 35014, 38003, 51086, 76006, 122549, 178801, 222589, 245098, 266021, 357602, 445178, 532042, 1558123, 3116246, 10906861, 21813722]

約数ペア:

[(1, 21813722), (2, 10906861), (7, 3116246), (14, 1558123), (41, 532042), (49, 445178), (61, 357602), (82, 266021), (89, 245098), (98, 222589), (122, 178801), (178, 122549), (287, 76006), (427, 51086), (574, 38003), (623, 35014), (854, 25543), (1246, 17507), (2009, 10858), (2501, 8722), (2989, 7298), (3649, 5978), (4018, 5429), (4361, 5002)]