About the Number

201901980

201901979 ← → 201901981

2進数表記:1100000010001100011110011100

漢数字表記:二億百九十万千九百八十

素因数分解:

2 2 × 3 1 × 5 1 × 7 1 × 19 1 × 25301 1

素因数の和:25339
約数の個数: 96
約数和(自身を含む): 680117760
約数和(自身を除く): 478215780

約数列:
[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2660, 3990, 7980, 25301, 50602, 75903, 101204, 126505, 151806, 177107, 253010, 303612, 354214, 379515, 480719, 506020, 531321, 708428, 759030, 885535, 961438, 1062642, 1442157, 1518060, 1771070, 1922876, 2125284, 2403595, 2656605, 2884314, 3365033, 3542140, 4807190, 5313210, 5768628, 6730066, 7210785, 9614380, 10095099, 10626420, 13460132, 14421570, 16825165, 20190198, 28843140, 33650330, 40380396, 50475495, 67300660, 100950990, 201901980]

約数ペア:
[(1, 201901980), (2, 100950990), (3, 67300660), (4, 50475495), (5, 40380396), (6, 33650330), (7, 28843140), (10, 20190198), (12, 16825165), (14, 14421570), (15, 13460132), (19, 10626420), (20, 10095099), (21, 9614380), (28, 7210785), (30, 6730066), (35, 5768628), (38, 5313210), (42, 4807190), (57, 3542140), (60, 3365033), (70, 2884314), (76, 2656605), (84, 2403595), (95, 2125284), (105, 1922876), (114, 1771070), (133, 1518060), (140, 1442157), (190, 1062642), (210, 961438), (228, 885535), (266, 759030), (285, 708428), (380, 531321), (399, 506020), (420, 480719), (532, 379515), (570, 354214), (665, 303612), (798, 253010), (1140, 177107), (1330, 151806), (1596, 126505), (1995, 101204), (2660, 75903), (3990, 50602), (7980, 25301)]

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