28163925

素因数分解:

$3^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:171

約数の個数: 72

約数和(自身を含む): 53621568

約数和(自身を除く): 25457643

約数列:

[1, 3, 5, 9, 15, 25, 41, 43, 45, 71, 75, 123, 129, 205, 213, 215, 225, 355, 369, 387, 615, 639, 645, 1025, 1065, 1075, 1763, 1775, 1845, 1935, 2911, 3053, 3075, 3195, 3225, 5289, 5325, 8733, 8815, 9159, 9225, 9675, 14555, 15265, 15867, 15975, 26199, 26445, 27477, 43665, 44075, 45795, 72775, 76325, 79335, 125173, 130995, 132225, 137385, 218325, 228975, 375519, 396675, 625865, 654975, 686925, 1126557, 1877595, 3129325, 5632785, 9387975, 28163925]

約数ペア:

[(1, 28163925), (3, 9387975), (5, 5632785), (9, 3129325), (15, 1877595), (25, 1126557), (41, 686925), (43, 654975), (45, 625865), (71, 396675), (75, 375519), (123, 228975), (129, 218325), (205, 137385), (213, 132225), (215, 130995), (225, 125173), (355, 79335), (369, 76325), (387, 72775), (615, 45795), (639, 44075), (645, 43665), (1025, 27477), (1065, 26445), (1075, 26199), (1763, 15975), (1775, 15867), (1845, 15265), (1935, 14555), (2911, 9675), (3053, 9225), (3075, 9159), (3195, 8815), (3225, 8733), (5289, 5325)]