21378240

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{571}}^1$

素因数の和:607

約数の個数: 168

約数和(自身を含む): 79327248

約数和(自身を除く): 57949008

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 64, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 180, 192, 195, 208, 234, 240, 260, 288, 312, 320, 360, 390, 416, 468, 480, 520, 571, 576, 585, 624, 720, 780, 832, 936, 960, 1040, 1142, 1170, 1248, 1440, 1560, 1713, 1872, 2080, 2284, 2340, 2496, 2855, 2880, 3120, 3426, 3744, 4160, 4568, 4680, 5139, 5710, 6240, 6852, 7423, 7488, 8565, 9136, 9360, 10278, 11420, 12480, 13704, 14846, 17130, 18272, 18720, 20556, 22269, 22840, 25695, 27408, 29692, 34260, 36544, 37115, 37440, 41112, 44538, 45680, 51390, 54816, 59384, 66807, 68520, 74230, 82224, 89076, 91360, 102780, 109632, 111345, 118768, 133614, 137040, 148460, 164448, 178152, 182720, 205560, 222690, 237536, 267228, 274080, 296920, 328896, 334035, 356304, 411120, 445380, 475072, 534456, 548160, 593840, 668070, 712608, 822240, 890760, 1068912, 1187680, 1336140, 1425216, 1644480, 1781520, 2137824, 2375360, 2672280, 3563040, 4275648, 5344560, 7126080, 10689120, 21378240]

約数ペア:

[(1, 21378240), (2, 10689120), (3, 7126080), (4, 5344560), (5, 4275648), (6, 3563040), (8, 2672280), (9, 2375360), (10, 2137824), (12, 1781520), (13, 1644480), (15, 1425216), (16, 1336140), (18, 1187680), (20, 1068912), (24, 890760), (26, 822240), (30, 712608), (32, 668070), (36, 593840), (39, 548160), (40, 534456), (45, 475072), (48, 445380), (52, 411120), (60, 356304), (64, 334035), (65, 328896), (72, 296920), (78, 274080), (80, 267228), (90, 237536), (96, 222690), (104, 205560), (117, 182720), (120, 178152), (130, 164448), (144, 148460), (156, 137040), (160, 133614), (180, 118768), (192, 111345), (195, 109632), (208, 102780), (234, 91360), (240, 89076), (260, 82224), (288, 74230), (312, 68520), (320, 66807), (360, 59384), (390, 54816), (416, 51390), (468, 45680), (480, 44538), (520, 41112), (571, 37440), (576, 37115), (585, 36544), (624, 34260), (720, 29692), (780, 27408), (832, 25695), (936, 22840), (960, 22269), (1040, 20556), (1142, 18720), (1170, 18272), (1248, 17130), (1440, 14846), (1560, 13704), (1713, 12480), (1872, 11420), (2080, 10278), (2284, 9360), (2340, 9136), (2496, 8565), (2855, 7488), (2880, 7423), (3120, 6852), (3426, 6240), (3744, 5710), (4160, 5139), (4568, 4680)]