20199331075

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:330

約数の個数: 144

約数和(自身を含む): 32979674880

約数和(自身を除く): 12780343805

約数列:

[1, 5, 7, 11, 25, 31, 35, 55, 61, 77, 155, 175, 179, 217, 275, 305, 341, 385, 427, 671, 775, 895, 961, 1085, 1253, 1525, 1705, 1891, 1925, 1969, 2135, 2387, 3355, 4475, 4697, 4805, 5425, 5549, 6265, 6727, 8525, 9455, 9845, 10571, 10675, 10919, 11935, 13237, 13783, 16775, 20801, 23485, 24025, 27745, 31325, 33635, 38843, 47275, 49225, 52855, 54595, 58621, 59675, 61039, 66185, 68915, 73997, 76433, 104005, 117425, 120109, 138725, 145607, 168175, 172019, 194215, 264275, 272975, 293105, 305195, 330925, 338489, 344575, 369985, 382165, 410347, 427273, 520025, 600545, 644831, 728035, 840763, 860095, 971075, 1204133, 1465525, 1525975, 1692445, 1849925, 1892209, 1910825, 2051735, 2136365, 2369423, 3002725, 3224155, 3640175, 3723379, 4203815, 4300475, 4513817, 6020665, 8462225, 9461045, 10258675, 10493159, 10681825, 11847115, 13245463, 16120775, 18616895, 21019075, 22569085, 26063653, 30103325, 47305225, 52465795, 59235575, 66227315, 73452113, 93084475, 112845425, 115424749, 130318265, 262328975, 331136575, 367260565, 577123745, 651591325, 807973243, 1836302825, 2885618725, 4039866215, 20199331075]

約数ペア:

[(1, 20199331075), (5, 4039866215), (7, 2885618725), (11, 1836302825), (25, 807973243), (31, 651591325), (35, 577123745), (55, 367260565), (61, 331136575), (77, 262328975), (155, 130318265), (175, 115424749), (179, 112845425), (217, 93084475), (275, 73452113), (305, 66227315), (341, 59235575), (385, 52465795), (427, 47305225), (671, 30103325), (775, 26063653), (895, 22569085), (961, 21019075), (1085, 18616895), (1253, 16120775), (1525, 13245463), (1705, 11847115), (1891, 10681825), (1925, 10493159), (1969, 10258675), (2135, 9461045), (2387, 8462225), (3355, 6020665), (4475, 4513817), (4697, 4300475), (4805, 4203815), (5425, 3723379), (5549, 3640175), (6265, 3224155), (6727, 3002725), (8525, 2369423), (9455, 2136365), (9845, 2051735), (10571, 1910825), (10675, 1892209), (10919, 1849925), (11935, 1692445), (13237, 1525975), (13783, 1465525), (16775, 1204133), (20801, 971075), (23485, 860095), (24025, 840763), (27745, 728035), (31325, 644831), (33635, 600545), (38843, 520025), (47275, 427273), (49225, 410347), (52855, 382165), (54595, 369985), (58621, 344575), (59675, 338489), (61039, 330925), (66185, 305195), (68915, 293105), (73997, 272975), (76433, 264275), (104005, 194215), (117425, 172019), (120109, 168175), (138725, 145607)]