21000313320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25000373}}^1$

素因数の和:25000394

約数の個数: 64

約数和(自身を含む): 72001077120

約数和(自身を除く): 51000763800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25000373, 50000746, 75001119, 100001492, 125001865, 150002238, 175002611, 200002984, 250003730, 300004476, 350005222, 375005595, 500007460, 525007833, 600008952, 700010444, 750011190, 875013055, 1000014920, 1050015666, 1400020888, 1500022380, 1750026110, 2100031332, 2625039165, 3000044760, 3500052220, 4200062664, 5250078330, 7000104440, 10500156660, 21000313320]

約数ペア:

[(1, 21000313320), (2, 10500156660), (3, 7000104440), (4, 5250078330), (5, 4200062664), (6, 3500052220), (7, 3000044760), (8, 2625039165), (10, 2100031332), (12, 1750026110), (14, 1500022380), (15, 1400020888), (20, 1050015666), (21, 1000014920), (24, 875013055), (28, 750011190), (30, 700010444), (35, 600008952), (40, 525007833), (42, 500007460), (56, 375005595), (60, 350005222), (70, 300004476), (84, 250003730), (105, 200002984), (120, 175002611), (140, 150002238), (168, 125001865), (210, 100001492), (280, 75001119), (420, 50000746), (840, 25000373)]