About the Number

220815980

220815979 ← → 220815981

2進数表記:1101001010010110001001101100

漢数字表記:二億二千八十一万五千九百八十

素因数分解:

2 2 × 5 1 × 7 1 × 11 1 × 143387 1

素因数の和:143414
約数の個数: 48
約数和(自身を含む): 578140416
約数和(自身を除く): 357324436

約数列:
[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 143387, 286774, 573548, 716935, 1003709, 1433870, 1577257, 2007418, 2867740, 3154514, 4014836, 5018545, 6309028, 7886285, 10037090, 11040799, 15772570, 20074180, 22081598, 31545140, 44163196, 55203995, 110407990, 220815980]

約数ペア:
[(1, 220815980), (2, 110407990), (4, 55203995), (5, 44163196), (7, 31545140), (10, 22081598), (11, 20074180), (14, 15772570), (20, 11040799), (22, 10037090), (28, 7886285), (35, 6309028), (44, 5018545), (55, 4014836), (70, 3154514), (77, 2867740), (110, 2007418), (140, 1577257), (154, 1433870), (220, 1003709), (308, 716935), (385, 573548), (770, 286774), (1540, 143387)]

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