About the Number

387307980

387307979 ← → 387307981

2進数表記:10111000101011101100111001100

漢数字表記:三億八千七百三十万七千九百八十

素因数分解:

2 2 × 3 5 × 5 1 × 79693 1

素因数の和:79717
約数の個数: 72
約数和(自身を含む): 1218361872
約数和(自身を除く): 831053892

約数列:
[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4860, 79693, 159386, 239079, 318772, 398465, 478158, 717237, 796930, 956316, 1195395, 1434474, 1593860, 2151711, 2390790, 2868948, 3586185, 4303422, 4781580, 6455133, 7172370, 8606844, 10758555, 12910266, 14344740, 19365399, 21517110, 25820532, 32275665, 38730798, 43034220, 64551330, 77461596, 96826995, 129102660, 193653990, 387307980]

約数ペア:
[(1, 387307980), (2, 193653990), (3, 129102660), (4, 96826995), (5, 77461596), (6, 64551330), (9, 43034220), (10, 38730798), (12, 32275665), (15, 25820532), (18, 21517110), (20, 19365399), (27, 14344740), (30, 12910266), (36, 10758555), (45, 8606844), (54, 7172370), (60, 6455133), (81, 4781580), (90, 4303422), (108, 3586185), (135, 2868948), (162, 2390790), (180, 2151711), (243, 1593860), (270, 1434474), (324, 1195395), (405, 956316), (486, 796930), (540, 717237), (810, 478158), (972, 398465), (1215, 318772), (1620, 239079), (2430, 159386), (4860, 79693)]

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