21290850

素因数分解:

$2^1\times 3^4\times 5^2\times 7^1\times {\mathrm{751}}^1$

素因数の和:782

約数の個数: 120

約数和(自身を含む): 67698048

約数和(自身を除く): 46407198

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 27, 30, 35, 42, 45, 50, 54, 63, 70, 75, 81, 90, 105, 126, 135, 150, 162, 175, 189, 210, 225, 270, 315, 350, 378, 405, 450, 525, 567, 630, 675, 751, 810, 945, 1050, 1134, 1350, 1502, 1575, 1890, 2025, 2253, 2835, 3150, 3755, 4050, 4506, 4725, 5257, 5670, 6759, 7510, 9450, 10514, 11265, 13518, 14175, 15771, 18775, 20277, 22530, 26285, 28350, 31542, 33795, 37550, 40554, 47313, 52570, 56325, 60831, 67590, 78855, 94626, 101385, 112650, 121662, 131425, 141939, 157710, 168975, 202770, 236565, 262850, 283878, 304155, 337950, 394275, 425817, 473130, 506925, 608310, 709695, 788550, 851634, 1013850, 1182825, 1419390, 1520775, 2129085, 2365650, 3041550, 3548475, 4258170, 7096950, 10645425, 21290850]

約数ペア:

[(1, 21290850), (2, 10645425), (3, 7096950), (5, 4258170), (6, 3548475), (7, 3041550), (9, 2365650), (10, 2129085), (14, 1520775), (15, 1419390), (18, 1182825), (21, 1013850), (25, 851634), (27, 788550), (30, 709695), (35, 608310), (42, 506925), (45, 473130), (50, 425817), (54, 394275), (63, 337950), (70, 304155), (75, 283878), (81, 262850), (90, 236565), (105, 202770), (126, 168975), (135, 157710), (150, 141939), (162, 131425), (175, 121662), (189, 112650), (210, 101385), (225, 94626), (270, 78855), (315, 67590), (350, 60831), (378, 56325), (405, 52570), (450, 47313), (525, 40554), (567, 37550), (630, 33795), (675, 31542), (751, 28350), (810, 26285), (945, 22530), (1050, 20277), (1134, 18775), (1350, 15771), (1502, 14175), (1575, 13518), (1890, 11265), (2025, 10514), (2253, 9450), (2835, 7510), (3150, 6759), (3755, 5670), (4050, 5257), (4506, 4725)]