21180810

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{349}}^1$

素因数の和:400

約数の個数: 96

約数和(自身を含む): 61891200

約数和(自身を除く): 40710390

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 17, 21, 30, 34, 35, 42, 51, 70, 85, 102, 105, 119, 170, 210, 238, 255, 289, 349, 357, 510, 578, 595, 698, 714, 867, 1047, 1190, 1445, 1734, 1745, 1785, 2023, 2094, 2443, 2890, 3490, 3570, 4046, 4335, 4886, 5235, 5933, 6069, 7329, 8670, 10115, 10470, 11866, 12138, 12215, 14658, 17799, 20230, 24430, 29665, 30345, 35598, 36645, 41531, 59330, 60690, 73290, 83062, 88995, 100861, 124593, 177990, 201722, 207655, 249186, 302583, 415310, 504305, 605166, 622965, 706027, 1008610, 1245930, 1412054, 1512915, 2118081, 3025830, 3530135, 4236162, 7060270, 10590405, 21180810]

約数ペア:

[(1, 21180810), (2, 10590405), (3, 7060270), (5, 4236162), (6, 3530135), (7, 3025830), (10, 2118081), (14, 1512915), (15, 1412054), (17, 1245930), (21, 1008610), (30, 706027), (34, 622965), (35, 605166), (42, 504305), (51, 415310), (70, 302583), (85, 249186), (102, 207655), (105, 201722), (119, 177990), (170, 124593), (210, 100861), (238, 88995), (255, 83062), (289, 73290), (349, 60690), (357, 59330), (510, 41531), (578, 36645), (595, 35598), (698, 30345), (714, 29665), (867, 24430), (1047, 20230), (1190, 17799), (1445, 14658), (1734, 12215), (1745, 12138), (1785, 11866), (2023, 10470), (2094, 10115), (2443, 8670), (2890, 7329), (3490, 6069), (3570, 5933), (4046, 5235), (4335, 4886)]