About the Number

20701980

20701979 ← → 20701981

2進数表記:1001110111110001100011100

漢数字表記:二千七十万千九百八十

素因数分解:

2 2 × 3 4 × 5 1 × 13 1 × 983 1

素因数の和:1017
約数の個数: 120
約数和(自身を含む): 70009632
約数和(自身を除く): 49307652

約数列:
[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 81, 90, 108, 117, 130, 135, 156, 162, 180, 195, 234, 260, 270, 324, 351, 390, 405, 468, 540, 585, 702, 780, 810, 983, 1053, 1170, 1404, 1620, 1755, 1966, 2106, 2340, 2949, 3510, 3932, 4212, 4915, 5265, 5898, 7020, 8847, 9830, 10530, 11796, 12779, 14745, 17694, 19660, 21060, 25558, 26541, 29490, 35388, 38337, 44235, 51116, 53082, 58980, 63895, 76674, 79623, 88470, 106164, 115011, 127790, 132705, 153348, 159246, 176940, 191685, 230022, 255580, 265410, 318492, 345033, 383370, 398115, 460044, 530820, 575055, 690066, 766740, 796230, 1035099, 1150110, 1380132, 1592460, 1725165, 2070198, 2300220, 3450330, 4140396, 5175495, 6900660, 10350990, 20701980]

約数ペア:
[(1, 20701980), (2, 10350990), (3, 6900660), (4, 5175495), (5, 4140396), (6, 3450330), (9, 2300220), (10, 2070198), (12, 1725165), (13, 1592460), (15, 1380132), (18, 1150110), (20, 1035099), (26, 796230), (27, 766740), (30, 690066), (36, 575055), (39, 530820), (45, 460044), (52, 398115), (54, 383370), (60, 345033), (65, 318492), (78, 265410), (81, 255580), (90, 230022), (108, 191685), (117, 176940), (130, 159246), (135, 153348), (156, 132705), (162, 127790), (180, 115011), (195, 106164), (234, 88470), (260, 79623), (270, 76674), (324, 63895), (351, 58980), (390, 53082), (405, 51116), (468, 44235), (540, 38337), (585, 35388), (702, 29490), (780, 26541), (810, 25558), (983, 21060), (1053, 19660), (1170, 17694), (1404, 14745), (1620, 12779), (1755, 11796), (1966, 10530), (2106, 9830), (2340, 8847), (2949, 7020), (3510, 5898), (3932, 5265), (4212, 4915)]

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