20565862520

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{338477}}^1$

素因数の和:338533

約数の個数: 96

約数和(自身を含む): 55564548480

約数和(自身を除く): 34998685960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 49, 56, 62, 70, 98, 124, 140, 155, 196, 217, 245, 248, 280, 310, 392, 434, 490, 620, 868, 980, 1085, 1240, 1519, 1736, 1960, 2170, 3038, 4340, 6076, 7595, 8680, 12152, 15190, 30380, 60760, 338477, 676954, 1353908, 1692385, 2369339, 2707816, 3384770, 4738678, 6769540, 9477356, 10492787, 11846695, 13539080, 16585373, 18954712, 20985574, 23693390, 33170746, 41971148, 47386780, 52463935, 66341492, 73449509, 82926865, 83942296, 94773560, 104927870, 132682984, 146899018, 165853730, 209855740, 293798036, 331707460, 367247545, 419711480, 514146563, 587596072, 663414920, 734495090, 1028293126, 1468990180, 2056586252, 2570732815, 2937980360, 4113172504, 5141465630, 10282931260, 20565862520]

約数ペア:

[(1, 20565862520), (2, 10282931260), (4, 5141465630), (5, 4113172504), (7, 2937980360), (8, 2570732815), (10, 2056586252), (14, 1468990180), (20, 1028293126), (28, 734495090), (31, 663414920), (35, 587596072), (40, 514146563), (49, 419711480), (56, 367247545), (62, 331707460), (70, 293798036), (98, 209855740), (124, 165853730), (140, 146899018), (155, 132682984), (196, 104927870), (217, 94773560), (245, 83942296), (248, 82926865), (280, 73449509), (310, 66341492), (392, 52463935), (434, 47386780), (490, 41971148), (620, 33170746), (868, 23693390), (980, 20985574), (1085, 18954712), (1240, 16585373), (1519, 13539080), (1736, 11846695), (1960, 10492787), (2170, 9477356), (3038, 6769540), (4340, 4738678), (6076, 3384770), (7595, 2707816), (8680, 2369339), (12152, 1692385), (15190, 1353908), (30380, 676954), (60760, 338477)]