19981856916

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1571}}^1\times {\mathrm{2969}}^1$

素因数の和:4574

約数の個数: 144

約数和(自身を含む): 61180479360

約数和(自身を除く): 41198622444

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 28, 34, 36, 42, 51, 63, 68, 84, 102, 119, 126, 153, 204, 238, 252, 306, 357, 476, 612, 714, 1071, 1428, 1571, 2142, 2969, 3142, 4284, 4713, 5938, 6284, 8907, 9426, 10997, 11876, 14139, 17814, 18852, 20783, 21994, 26707, 26721, 28278, 32991, 35628, 41566, 43988, 50473, 53414, 53442, 56556, 62349, 65982, 80121, 83132, 98973, 100946, 106828, 106884, 124698, 131964, 151419, 160242, 186949, 187047, 197946, 201892, 240363, 249396, 302838, 320484, 353311, 373898, 374094, 395892, 454257, 480726, 560847, 605676, 706622, 747796, 748188, 908514, 961452, 1059933, 1121694, 1413244, 1682541, 1817028, 2119866, 2243388, 3179799, 3365082, 4239732, 4664299, 6359598, 6730164, 9328598, 12719196, 13992897, 18657196, 27985794, 32650093, 41978691, 55971588, 65300186, 79293083, 83957382, 97950279, 130600372, 158586166, 167914764, 195900558, 237879249, 293850837, 317172332, 391801116, 475758498, 555051581, 587701674, 713637747, 951516996, 1110103162, 1175403348, 1427275494, 1665154743, 2220206324, 2854550988, 3330309486, 4995464229, 6660618972, 9990928458, 19981856916]

約数ペア:

[(1, 19981856916), (2, 9990928458), (3, 6660618972), (4, 4995464229), (6, 3330309486), (7, 2854550988), (9, 2220206324), (12, 1665154743), (14, 1427275494), (17, 1175403348), (18, 1110103162), (21, 951516996), (28, 713637747), (34, 587701674), (36, 555051581), (42, 475758498), (51, 391801116), (63, 317172332), (68, 293850837), (84, 237879249), (102, 195900558), (119, 167914764), (126, 158586166), (153, 130600372), (204, 97950279), (238, 83957382), (252, 79293083), (306, 65300186), (357, 55971588), (476, 41978691), (612, 32650093), (714, 27985794), (1071, 18657196), (1428, 13992897), (1571, 12719196), (2142, 9328598), (2969, 6730164), (3142, 6359598), (4284, 4664299), (4713, 4239732), (5938, 3365082), (6284, 3179799), (8907, 2243388), (9426, 2119866), (10997, 1817028), (11876, 1682541), (14139, 1413244), (17814, 1121694), (18852, 1059933), (20783, 961452), (21994, 908514), (26707, 748188), (26721, 747796), (28278, 706622), (32991, 605676), (35628, 560847), (41566, 480726), (43988, 454257), (50473, 395892), (53414, 374094), (53442, 373898), (56556, 353311), (62349, 320484), (65982, 302838), (80121, 249396), (83132, 240363), (98973, 201892), (100946, 197946), (106828, 187047), (106884, 186949), (124698, 160242), (131964, 151419)]