About the Number

20201580

20201579 ← → 20201581

2進数表記:1001101000100000001101100

漢数字表記:二千二十万千五百八十

素因数分解:

2 2 × 3 2 × 5 1 × 7 1 × 16033 1

素因数の和:16055
約数の個数: 72
約数和(自身を含む): 70036512
約数和(自身を除く): 49834932

約数列:
[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16033, 32066, 48099, 64132, 80165, 96198, 112231, 144297, 160330, 192396, 224462, 240495, 288594, 320660, 336693, 448924, 480990, 561155, 577188, 673386, 721485, 961980, 1010079, 1122310, 1346772, 1442970, 1683465, 2020158, 2244620, 2885940, 3366930, 4040316, 5050395, 6733860, 10100790, 20201580]

約数ペア:
[(1, 20201580), (2, 10100790), (3, 6733860), (4, 5050395), (5, 4040316), (6, 3366930), (7, 2885940), (9, 2244620), (10, 2020158), (12, 1683465), (14, 1442970), (15, 1346772), (18, 1122310), (20, 1010079), (21, 961980), (28, 721485), (30, 673386), (35, 577188), (36, 561155), (42, 480990), (45, 448924), (60, 336693), (63, 320660), (70, 288594), (84, 240495), (90, 224462), (105, 192396), (126, 160330), (140, 144297), (180, 112231), (210, 96198), (252, 80165), (315, 64132), (420, 48099), (630, 32066), (1260, 16033)]

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