About the Number

120723980

120723979 ← → 120723981

2進数表記:111001100100001101000001100

漢数字表記:一億二千七十二万三千九百八十

素因数分解:

2 2 × 5 1 × 13 1 × 311 1 × 1493 1

素因数の和:1826
約数の個数: 48
約数和(自身を含む): 274083264
約数和(自身を除く): 153359284

約数列:
[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 311, 622, 1244, 1493, 1555, 2986, 3110, 4043, 5972, 6220, 7465, 8086, 14930, 16172, 19409, 20215, 29860, 38818, 40430, 77636, 80860, 97045, 194090, 388180, 464323, 928646, 1857292, 2321615, 4643230, 6036199, 9286460, 12072398, 24144796, 30180995, 60361990, 120723980]

約数ペア:
[(1, 120723980), (2, 60361990), (4, 30180995), (5, 24144796), (10, 12072398), (13, 9286460), (20, 6036199), (26, 4643230), (52, 2321615), (65, 1857292), (130, 928646), (260, 464323), (311, 388180), (622, 194090), (1244, 97045), (1493, 80860), (1555, 77636), (2986, 40430), (3110, 38818), (4043, 29860), (5972, 20215), (6220, 19409), (7465, 16172), (8086, 14930)]

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