About the Number
20809577481
2進数表記:10011011000010110001111010000001001
漢数字表記:二百八億九百五十七万七千四百八十一
素因数分解:
素因数の和:999
約数の個数: 128
約数和(自身を含む): 37860286464
約数和(自身を除く): 17050708983
約数列:
[1, 3, 7, 11, 17, 21, 33, 37, 51, 77, 111, 119, 187, 197, 231, 259, 357, 407, 561, 591, 629, 727, 777, 1221, 1309, 1379, 1887, 2167, 2181, 2849, 3349, 3927, 4137, 4403, 5089, 6501, 6919, 7289, 7997, 8547, 10047, 12359, 13209, 15169, 15267, 20757, 21867, 23443, 23991, 26899, 36839, 37077, 45507, 48433, 51023, 55979, 70329, 80179, 80697, 86513, 110517, 123913, 135949, 143219, 145299, 153069, 167937, 188293, 240537, 257873, 259539, 295889, 371739, 407847, 429657, 457283, 561253, 564879, 773619, 867391, 887667, 951643, 1002533, 1363043, 1371849, 1575409, 1683759, 2071223, 2434723, 2602173, 2854929, 3007599, 3200981, 4089129, 4726227, 5030113, 5299103, 6213669, 7304169, 9541301, 9602943, 11027863, 15090339, 15897309, 17043061, 26781953, 28623903, 33083589, 35210791, 37093721, 51129183, 58290133, 80345859, 90084751, 105632373, 111281163, 174870399, 187473671, 270254253, 408030931, 562421013, 630593257, 990932261, 1224092793, 1891779771, 2972796783, 6936525827, 20809577481]
約数ペア:
[(1, 20809577481), (3, 6936525827), (7, 2972796783), (11, 1891779771), (17, 1224092793), (21, 990932261), (33, 630593257), (37, 562421013), (51, 408030931), (77, 270254253), (111, 187473671), (119, 174870399), (187, 111281163), (197, 105632373), (231, 90084751), (259, 80345859), (357, 58290133), (407, 51129183), (561, 37093721), (591, 35210791), (629, 33083589), (727, 28623903), (777, 26781953), (1221, 17043061), (1309, 15897309), (1379, 15090339), (1887, 11027863), (2167, 9602943), (2181, 9541301), (2849, 7304169), (3349, 6213669), (3927, 5299103), (4137, 5030113), (4403, 4726227), (5089, 4089129), (6501, 3200981), (6919, 3007599), (7289, 2854929), (7997, 2602173), (8547, 2434723), (10047, 2071223), (12359, 1683759), (13209, 1575409), (15169, 1371849), (15267, 1363043), (20757, 1002533), (21867, 951643), (23443, 887667), (23991, 867391), (26899, 773619), (36839, 564879), (37077, 561253), (45507, 457283), (48433, 429657), (51023, 407847), (55979, 371739), (70329, 295889), (80179, 259539), (80697, 257873), (86513, 240537), (110517, 188293), (123913, 167937), (135949, 153069), (143219, 145299)]このpageの処理時間: 0.03514218330383301 seconds