21609840

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{677}}^1$

素因数の和:719

約数の個数: 160

約数和(自身を含む): 80709120

約数和(自身を除く): 59099280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 48, 56, 57, 60, 70, 76, 80, 84, 95, 105, 112, 114, 120, 133, 140, 152, 168, 190, 210, 228, 240, 266, 280, 285, 304, 336, 380, 399, 420, 456, 532, 560, 570, 665, 677, 760, 798, 840, 912, 1064, 1140, 1330, 1354, 1520, 1596, 1680, 1995, 2031, 2128, 2280, 2660, 2708, 3192, 3385, 3990, 4062, 4560, 4739, 5320, 5416, 6384, 6770, 7980, 8124, 9478, 10155, 10640, 10832, 12863, 13540, 14217, 15960, 16248, 18956, 20310, 23695, 25726, 27080, 28434, 31920, 32496, 37912, 38589, 40620, 47390, 51452, 54160, 56868, 64315, 71085, 75824, 77178, 81240, 90041, 94780, 102904, 113736, 128630, 142170, 154356, 162480, 180082, 189560, 192945, 205808, 227472, 257260, 270123, 284340, 308712, 360164, 379120, 385890, 450205, 514520, 540246, 568680, 617424, 720328, 771780, 900410, 1029040, 1080492, 1137360, 1350615, 1440656, 1543560, 1800820, 2160984, 2701230, 3087120, 3601640, 4321968, 5402460, 7203280, 10804920, 21609840]

約数ペア:

[(1, 21609840), (2, 10804920), (3, 7203280), (4, 5402460), (5, 4321968), (6, 3601640), (7, 3087120), (8, 2701230), (10, 2160984), (12, 1800820), (14, 1543560), (15, 1440656), (16, 1350615), (19, 1137360), (20, 1080492), (21, 1029040), (24, 900410), (28, 771780), (30, 720328), (35, 617424), (38, 568680), (40, 540246), (42, 514520), (48, 450205), (56, 385890), (57, 379120), (60, 360164), (70, 308712), (76, 284340), (80, 270123), (84, 257260), (95, 227472), (105, 205808), (112, 192945), (114, 189560), (120, 180082), (133, 162480), (140, 154356), (152, 142170), (168, 128630), (190, 113736), (210, 102904), (228, 94780), (240, 90041), (266, 81240), (280, 77178), (285, 75824), (304, 71085), (336, 64315), (380, 56868), (399, 54160), (420, 51452), (456, 47390), (532, 40620), (560, 38589), (570, 37912), (665, 32496), (677, 31920), (760, 28434), (798, 27080), (840, 25726), (912, 23695), (1064, 20310), (1140, 18956), (1330, 16248), (1354, 15960), (1520, 14217), (1596, 13540), (1680, 12863), (1995, 10832), (2031, 10640), (2128, 10155), (2280, 9478), (2660, 8124), (2708, 7980), (3192, 6770), (3385, 6384), (3990, 5416), (4062, 5320), (4560, 4739)]