21723240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2351}}^1$

素因数の和:2383

約数の個数: 128

約数和(自身を含む): 81285120

約数和(自身を除く): 59561880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 55, 56, 60, 66, 70, 77, 84, 88, 105, 110, 120, 132, 140, 154, 165, 168, 210, 220, 231, 264, 280, 308, 330, 385, 420, 440, 462, 616, 660, 770, 840, 924, 1155, 1320, 1540, 1848, 2310, 2351, 3080, 4620, 4702, 7053, 9240, 9404, 11755, 14106, 16457, 18808, 23510, 25861, 28212, 32914, 35265, 47020, 49371, 51722, 56424, 65828, 70530, 77583, 82285, 94040, 98742, 103444, 129305, 131656, 141060, 155166, 164570, 181027, 197484, 206888, 246855, 258610, 282120, 310332, 329140, 362054, 387915, 394968, 493710, 517220, 543081, 620664, 658280, 724108, 775830, 905135, 987420, 1034440, 1086162, 1448216, 1551660, 1810270, 1974840, 2172324, 2715405, 3103320, 3620540, 4344648, 5430810, 7241080, 10861620, 21723240]

約数ペア:

[(1, 21723240), (2, 10861620), (3, 7241080), (4, 5430810), (5, 4344648), (6, 3620540), (7, 3103320), (8, 2715405), (10, 2172324), (11, 1974840), (12, 1810270), (14, 1551660), (15, 1448216), (20, 1086162), (21, 1034440), (22, 987420), (24, 905135), (28, 775830), (30, 724108), (33, 658280), (35, 620664), (40, 543081), (42, 517220), (44, 493710), (55, 394968), (56, 387915), (60, 362054), (66, 329140), (70, 310332), (77, 282120), (84, 258610), (88, 246855), (105, 206888), (110, 197484), (120, 181027), (132, 164570), (140, 155166), (154, 141060), (165, 131656), (168, 129305), (210, 103444), (220, 98742), (231, 94040), (264, 82285), (280, 77583), (308, 70530), (330, 65828), (385, 56424), (420, 51722), (440, 49371), (462, 47020), (616, 35265), (660, 32914), (770, 28212), (840, 25861), (924, 23510), (1155, 18808), (1320, 16457), (1540, 14106), (1848, 11755), (2310, 9404), (2351, 9240), (3080, 7053), (4620, 4702)]