About the Number

20480980

20480979 ← → 20480981

2進数表記:1001110001000001111010100

漢数字表記:二千四十八万九百八十

素因数分解:

2 2 × 5 1 × 13 1 × 37 1 × 2129 1

素因数の和:2188
約数の個数: 48
約数和(自身を含む): 47592720
約数和(自身を除く): 27111740

約数列:
[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2129, 2405, 4258, 4810, 8516, 9620, 10645, 21290, 27677, 42580, 55354, 78773, 110708, 138385, 157546, 276770, 315092, 393865, 553540, 787730, 1024049, 1575460, 2048098, 4096196, 5120245, 10240490, 20480980]

約数ペア:
[(1, 20480980), (2, 10240490), (4, 5120245), (5, 4096196), (10, 2048098), (13, 1575460), (20, 1024049), (26, 787730), (37, 553540), (52, 393865), (65, 315092), (74, 276770), (130, 157546), (148, 138385), (185, 110708), (260, 78773), (370, 55354), (481, 42580), (740, 27677), (962, 21290), (1924, 10645), (2129, 9620), (2405, 8516), (4258, 4810)]

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