21666321040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{353}}^1\times {\mathrm{8431}}^1$

素因数の和:8817

約数の個数: 160

約数和(自身を含む): 62182020096

約数和(自身を除く): 40515699056

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 353, 364, 455, 520, 560, 706, 728, 910, 1040, 1412, 1456, 1765, 1820, 2471, 2824, 3530, 3640, 4589, 4942, 5648, 7060, 7280, 8431, 9178, 9884, 12355, 14120, 16862, 18356, 19768, 22945, 24710, 28240, 32123, 33724, 36712, 39536, 42155, 45890, 49420, 59017, 64246, 67448, 73424, 84310, 91780, 98840, 109603, 118034, 128492, 134896, 160615, 168620, 183560, 197680, 219206, 236068, 256984, 295085, 321230, 337240, 367120, 438412, 472136, 513968, 548015, 590170, 642460, 674480, 767221, 876824, 944272, 1096030, 1180340, 1284920, 1534442, 1753648, 2192060, 2360680, 2569840, 2976143, 3068884, 3836105, 4384120, 4721360, 5952286, 6137768, 7672210, 8768240, 11904572, 12275536, 14880715, 15344420, 20833001, 23809144, 29761430, 30688840, 38689859, 41666002, 47618288, 59522860, 61377680, 77379718, 83332004, 104165005, 119045720, 154759436, 166664008, 193449295, 208330010, 238091440, 270829013, 309518872, 333328016, 386898590, 416660020, 541658026, 619037744, 773797180, 833320040, 1083316052, 1354145065, 1547594360, 1666640080, 2166632104, 2708290130, 3095188720, 4333264208, 5416580260, 10833160520, 21666321040]

約数ペア:

[(1, 21666321040), (2, 10833160520), (4, 5416580260), (5, 4333264208), (7, 3095188720), (8, 2708290130), (10, 2166632104), (13, 1666640080), (14, 1547594360), (16, 1354145065), (20, 1083316052), (26, 833320040), (28, 773797180), (35, 619037744), (40, 541658026), (52, 416660020), (56, 386898590), (65, 333328016), (70, 309518872), (80, 270829013), (91, 238091440), (104, 208330010), (112, 193449295), (130, 166664008), (140, 154759436), (182, 119045720), (208, 104165005), (260, 83332004), (280, 77379718), (353, 61377680), (364, 59522860), (455, 47618288), (520, 41666002), (560, 38689859), (706, 30688840), (728, 29761430), (910, 23809144), (1040, 20833001), (1412, 15344420), (1456, 14880715), (1765, 12275536), (1820, 11904572), (2471, 8768240), (2824, 7672210), (3530, 6137768), (3640, 5952286), (4589, 4721360), (4942, 4384120), (5648, 3836105), (7060, 3068884), (7280, 2976143), (8431, 2569840), (9178, 2360680), (9884, 2192060), (12355, 1753648), (14120, 1534442), (16862, 1284920), (18356, 1180340), (19768, 1096030), (22945, 944272), (24710, 876824), (28240, 767221), (32123, 674480), (33724, 642460), (36712, 590170), (39536, 548015), (42155, 513968), (45890, 472136), (49420, 438412), (59017, 367120), (64246, 337240), (67448, 321230), (73424, 295085), (84310, 256984), (91780, 236068), (98840, 219206), (109603, 197680), (118034, 183560), (128492, 168620), (134896, 160615)]