20161321960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{9749}}^1$

素因数の和:9911

約数の個数: 128

約数和(自身を含む): 50565060000

約数和(自身を除く): 30403738040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 97, 104, 130, 164, 194, 205, 260, 328, 388, 410, 485, 520, 533, 776, 820, 970, 1066, 1261, 1640, 1940, 2132, 2522, 2665, 3880, 3977, 4264, 5044, 5330, 6305, 7954, 9749, 10088, 10660, 12610, 15908, 19498, 19885, 21320, 25220, 31816, 38996, 39770, 48745, 50440, 51701, 77992, 79540, 97490, 103402, 126737, 159080, 194980, 206804, 253474, 258505, 389960, 399709, 413608, 506948, 517010, 633685, 799418, 945653, 1013896, 1034020, 1267370, 1598836, 1891306, 1998545, 2068040, 2534740, 3197672, 3782612, 3997090, 4728265, 5069480, 5196217, 7565224, 7994180, 9456530, 10392434, 12293489, 15988360, 18913060, 20784868, 24586978, 25981085, 37826120, 38771773, 41569736, 49173956, 51962170, 61467445, 77543546, 98347912, 103924340, 122934890, 155087092, 193858865, 207848680, 245869780, 310174184, 387717730, 491739560, 504033049, 775435460, 1008066098, 1550870920, 2016132196, 2520165245, 4032264392, 5040330490, 10080660980, 20161321960]

約数ペア:

[(1, 20161321960), (2, 10080660980), (4, 5040330490), (5, 4032264392), (8, 2520165245), (10, 2016132196), (13, 1550870920), (20, 1008066098), (26, 775435460), (40, 504033049), (41, 491739560), (52, 387717730), (65, 310174184), (82, 245869780), (97, 207848680), (104, 193858865), (130, 155087092), (164, 122934890), (194, 103924340), (205, 98347912), (260, 77543546), (328, 61467445), (388, 51962170), (410, 49173956), (485, 41569736), (520, 38771773), (533, 37826120), (776, 25981085), (820, 24586978), (970, 20784868), (1066, 18913060), (1261, 15988360), (1640, 12293489), (1940, 10392434), (2132, 9456530), (2522, 7994180), (2665, 7565224), (3880, 5196217), (3977, 5069480), (4264, 4728265), (5044, 3997090), (5330, 3782612), (6305, 3197672), (7954, 2534740), (9749, 2068040), (10088, 1998545), (10660, 1891306), (12610, 1598836), (15908, 1267370), (19498, 1034020), (19885, 1013896), (21320, 945653), (25220, 799418), (31816, 633685), (38996, 517010), (39770, 506948), (48745, 413608), (50440, 399709), (51701, 389960), (77992, 258505), (79540, 253474), (97490, 206804), (103402, 194980), (126737, 159080)]