21246840

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{191}}^1$

素因数の和:314

約数の個数: 128

約数和(自身を含む): 71884800

約数和(自身を除く): 50637960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 103, 108, 120, 135, 180, 191, 206, 216, 270, 309, 360, 382, 412, 515, 540, 573, 618, 764, 824, 927, 955, 1030, 1080, 1146, 1236, 1528, 1545, 1719, 1854, 1910, 2060, 2292, 2472, 2781, 2865, 3090, 3438, 3708, 3820, 4120, 4584, 4635, 5157, 5562, 5730, 6180, 6876, 7416, 7640, 8595, 9270, 10314, 11124, 11460, 12360, 13752, 13905, 17190, 18540, 19673, 20628, 22248, 22920, 25785, 27810, 34380, 37080, 39346, 41256, 51570, 55620, 59019, 68760, 78692, 98365, 103140, 111240, 118038, 157384, 177057, 196730, 206280, 236076, 295095, 354114, 393460, 472152, 531171, 590190, 708228, 786920, 885285, 1062342, 1180380, 1416456, 1770570, 2124684, 2360760, 2655855, 3541140, 4249368, 5311710, 7082280, 10623420, 21246840]

約数ペア:

[(1, 21246840), (2, 10623420), (3, 7082280), (4, 5311710), (5, 4249368), (6, 3541140), (8, 2655855), (9, 2360760), (10, 2124684), (12, 1770570), (15, 1416456), (18, 1180380), (20, 1062342), (24, 885285), (27, 786920), (30, 708228), (36, 590190), (40, 531171), (45, 472152), (54, 393460), (60, 354114), (72, 295095), (90, 236076), (103, 206280), (108, 196730), (120, 177057), (135, 157384), (180, 118038), (191, 111240), (206, 103140), (216, 98365), (270, 78692), (309, 68760), (360, 59019), (382, 55620), (412, 51570), (515, 41256), (540, 39346), (573, 37080), (618, 34380), (764, 27810), (824, 25785), (927, 22920), (955, 22248), (1030, 20628), (1080, 19673), (1146, 18540), (1236, 17190), (1528, 13905), (1545, 13752), (1719, 12360), (1854, 11460), (1910, 11124), (2060, 10314), (2292, 9270), (2472, 8595), (2781, 7640), (2865, 7416), (3090, 6876), (3438, 6180), (3708, 5730), (3820, 5562), (4120, 5157), (4584, 4635)]