21287420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{601}}^1$

素因数の和:651

約数の個数: 96

約数和(自身を含む): 58254336

約数和(自身を除く): 36966916

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 23, 28, 35, 44, 46, 55, 70, 77, 92, 110, 115, 140, 154, 161, 220, 230, 253, 308, 322, 385, 460, 506, 601, 644, 770, 805, 1012, 1202, 1265, 1540, 1610, 1771, 2404, 2530, 3005, 3220, 3542, 4207, 5060, 6010, 6611, 7084, 8414, 8855, 12020, 13222, 13823, 16828, 17710, 21035, 26444, 27646, 33055, 35420, 42070, 46277, 55292, 66110, 69115, 84140, 92554, 96761, 132220, 138230, 152053, 185108, 193522, 231385, 276460, 304106, 387044, 462770, 483805, 608212, 760265, 925540, 967610, 1064371, 1520530, 1935220, 2128742, 3041060, 4257484, 5321855, 10643710, 21287420]

約数ペア:

[(1, 21287420), (2, 10643710), (4, 5321855), (5, 4257484), (7, 3041060), (10, 2128742), (11, 1935220), (14, 1520530), (20, 1064371), (22, 967610), (23, 925540), (28, 760265), (35, 608212), (44, 483805), (46, 462770), (55, 387044), (70, 304106), (77, 276460), (92, 231385), (110, 193522), (115, 185108), (140, 152053), (154, 138230), (161, 132220), (220, 96761), (230, 92554), (253, 84140), (308, 69115), (322, 66110), (385, 55292), (460, 46277), (506, 42070), (601, 35420), (644, 33055), (770, 27646), (805, 26444), (1012, 21035), (1202, 17710), (1265, 16828), (1540, 13823), (1610, 13222), (1771, 12020), (2404, 8855), (2530, 8414), (3005, 7084), (3220, 6611), (3542, 6010), (4207, 5060)]