77978925

素因数分解:

$3^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 146240640

約数和(自身を除く): 68261715

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 75, 79, 107, 123, 205, 225, 237, 321, 369, 395, 535, 615, 711, 963, 1025, 1185, 1605, 1845, 1975, 2675, 3075, 3239, 3555, 4387, 4815, 5925, 8025, 8453, 9225, 9717, 13161, 16195, 17775, 21935, 24075, 25359, 29151, 39483, 42265, 48585, 65805, 76077, 80975, 109675, 126795, 145755, 197415, 211325, 242925, 329025, 346573, 380385, 633975, 728775, 987075, 1039719, 1732865, 1901925, 3119157, 5198595, 8664325, 15595785, 25992975, 77978925]

約数ペア:

[(1, 77978925), (3, 25992975), (5, 15595785), (9, 8664325), (15, 5198595), (25, 3119157), (41, 1901925), (45, 1732865), (75, 1039719), (79, 987075), (107, 728775), (123, 633975), (205, 380385), (225, 346573), (237, 329025), (321, 242925), (369, 211325), (395, 197415), (535, 145755), (615, 126795), (711, 109675), (963, 80975), (1025, 76077), (1185, 65805), (1605, 48585), (1845, 42265), (1975, 39483), (2675, 29151), (3075, 25359), (3239, 24075), (3555, 21935), (4387, 17775), (4815, 16195), (5925, 13161), (8025, 9717), (8453, 9225)]